andyphan@chromium.org thestig@chromium.org Tracks user actions in the PDF viewer. Logged when the document is opened and when one of the relevant user actions is taken, such as opening the bookmarks bar or setting the zoom mode to fit-to-page. The enum values that are named "First" are logged only once per document, so that we can measure in what percentage of documents a given action was performed at least once. andyphan@chromium.org thestig@chromium.org Tracks the PDF caret becoming visible for the first time when caret browsing mode is enabled. Logged only once per document. Always records true. Not recorded for Print Preview, since caret browsing mode is always disabled there. jessemckenna@google.com davidbienvenu@chromium.org Whether Chrome is the default PDF viewer at startup. Only recorded on Windows and Mac. rhalavati@chromium.org thestig@chromium.org Tracks the time between creating the PDF engine to load the PDF, until when it is destructed. This metric does not consider PDF being actively focused and interacted or not, and is not recorded for print preview. rhalavati@chromium.org thestig@chromium.org Tracks the time that it takes from creating the PDF engine to load the PDF until starting the render of the first set of visible pages. This metric is affected by PDF load time and network speed, therefore it's best to be used in comparisons to cancel out unrelated events and not as a standalone performance metrics. This metric is not stored for print preview. dhoss@chromium.org thestig@chromium.org Tracks what types of forms are present in PDF document, logged when the document finishes loading. erikchen@chromium.org thestig@chromium.org Emitted once each time a pdf (not print preview) is loaded. The boolean indicates whether glic was enabled for the profile. erikchen@chromium.org thestig@chromium.org Emitted once each time the glic summarize button is clicked. Records true on success and false on any failure. erikchen@chromium.org thestig@chromium.org Emitted once each time a pdf (not print preview) is loaded. The boolean indicates whether the summarize button was enabled for the profile. Note that embedded pdfs if too small may still not show the summarize button. nigi@chromium.org thestig@chromium.org Measures if PDFs opened in the PDF viewer have attachments. This is logged whenever a document is opened in the PDF viewer. jessemckenna@google.com davidbienvenu@chromium.org The result of showing the Windows settings UI to set Chrome as the default PDF viewer. Recorded 30 seconds after the call to open the settings dialog returns. Only recorded on Windows. jessemckenna@google.com davidbienvenu@chromium.org Recorded every time the PDF infobar is shown. jessemckenna@google.com davidbienvenu@chromium.org User interaction with the PDF infobar (e.g., accepted, ignored, dismissed). andyphan@chromium.org thestig@chromium.org Tracks emoji font load failures for Ink text annotations in the PDF viewer. Recorded when an emoji font fails to load. Always records true. andyphan@chromium.org thestig@chromium.org Tracks the success or failure of loading fonts for Ink text annotations in the PDF viewer. Recorded when attempting to load a font. Records true on success and false on failure. andyphan@chromium.org thestig@chromium.org Tracks the brush type used for Ink2 stroke modifications in the PDF viewer. This includes new drawing strokes as well as erasing strokes. Erase strokes that erase pre-existing strokes in a PDF are also included. This is only recorded when drawing or erasing actions are performed by the user, but not if they occur as part of undo or redo operations. Eraser strokes that do not erase any other strokes are ignored. andyphan@chromium.org thestig@chromium.org Tracks the brush color used for an Ink2 Highlighter stroke modification in the PDF viewer. This is only recorded when drawing actions are performed by the user, but not if they occur as part of undo or redo operations. Note that this histogram shares the same enum with PDF.Ink2TextHighlighterColor. andyphan@chromium.org thestig@chromium.org Tracks the input device type used for an Ink2 stroke modification in the PDF viewer. This includes new drawing strokes as well as erasing strokes. Erase strokes that erase pre-existing strokes in a PDF are also included. This is only recorded when drawing or erasing actions are performed by the user, but not if they occur as part of undo or redo operations. Eraser strokes that do not erase any other strokes are ignored. Note that this histogram shares the same enum with PDF.Ink2TextHighlightInputDeviceType. andyphan@chromium.org thestig@chromium.org Tracks the brush color used for an Ink2 Pen stroke modification in the PDF viewer. This is only recorded when drawing actions are performed by the user, but not if they occur as part of undo or redo operations. andyphan@chromium.org thestig@chromium.org Tracks the brush size used for an Ink2 {Brush} stroke modification in the PDF viewer. This includes new drawing strokes, but not erasing strokes, as the eraser does not have a size. This is only recorded when drawing actions are performed by the user, but not if they occur as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks the text alignment (left, center, or right) used for an Ink2 text annotation in the PDF viewer. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks whether an Ink2 text annotation in the PDF viewer has the bold style applied. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks the color used for an Ink2 text annotation in the PDF viewer. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks whether an Ink2 text annotation in the PDF viewer has the italic style applied. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks the font size used for an Ink2 text annotation in the PDF viewer. The value recorded are integer font sizes and assumes there are no fractional sizes. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks the typeface used for an Ink2 text annotation in the PDF viewer. Specifically, it represents the higher-level user choice, and not the actual underlying system font. This is recorded whenever a non-empty text annotation is committed by the user (either created or edited), but not if it occurs as part of undo or redo operations. thestig@chromium.org andyphan@chromium.org Tracks the number of text annotations {Action} in a PDF document during a PDF viewer session. This is recorded every time the user saves the PDF with changes. On the initial save, it records the delta from the number of text annotations the PDF started with. On subsequent saves, it records the delta since the last save. Nothing is recorded if the number of text annotations did not change. andyphan@chromium.org thestig@chromium.org Tracks the highlighter color used for a single Ink2 text highlight action in the PDF viewer. A text highlight action consists of one or more highlight strokes that cover the user's text selection in the PDF. This is only recorded when the text highlighting action is performed by the user, but not if they occur as part of undo or redo operations. Note that this histogram shares the same enum with PDF.Ink2StrokeHighlighterColor. andyphan@chromium.org thestig@chromium.org Tracks the input device type used for a single Ink2 text highlight action in the PDF viewer. A text highlight action consists of one or more highlight strokes that cover the user's text selection in the PDF. This is only recorded when the text highlighting action is performed by the user, but not if they occur as part of undo or redo operations. Note that this histogram shares the same enum with PDF.Ink2StrokeInputDeviceType. andyphan@chromium.org thestig@chromium.org Tracks the number of PDF documents loaded with existing Ink text annotations in the PDF viewer. Records "Unknown" if there is a timeout failure when scanning the PDF for existing Ink text annotations. andyphan@chromium.org thestig@chromium.org Tracks the number of PDF documents loaded with existing V2 ink annotations in the PDF viewer. Records "Unknown" if there is a timeout failure when scanning the PDF for existing V2 ink annotations. andyphan@chromium.org thestig@chromium.org Tracks what happens when Chrome tries to load a PDF. This metric tracks all cases, but is focused on measuring failed PDF embeds, which occur if the user is on Android, or if PDF plugin is disabled. andyphan@chromium.org thestig@chromium.org Tracks the number of pages in PDF documents opened in the PDF viewer. rhalavati@chromium.org thestig@chromium.org Tracks if a PDF page had text or not. This metric is recorded for each page only the first time the page is loaded. andyphan@chromium.org thestig@chromium.org Tracks the type of postMessage() call made to the PDF viewer. thestig@chromium.org ask@chromium.org Time used for a full paint operation cycle in the PDF viewer, sans time spent to flush afterwards. This encompasses multiple PDF.RenderAndPaintVisiblePagesTime records. thestig@chromium.org ask@chromium.org Time used for rendering and painting all the visible pages in the PDF viewer that require repainting because they intersect a damaged rect. thestig@chromium.org ask@chromium.org Time used for a full paint operation cycle in the PDF viewer, including time spent to flush afterwards. This encompasses multiple PDF.RenderAndPaintVisiblePagesTime records. faizur@google.com clarkbrian@chromium.org Records the action taken in the Save to Drive bubble from the PDF viewer. faizur@google.com clarkbrian@chromium.org Records the UI state of the opened Save to Drive bubble from the PDF viewer, i.e., whether it is showing a success or a failure message. faizur@google.com clarkbrian@chromium.org Records the size of the file being saved to Drive from the PDF viewer. Recorded when an upload completes successfully. faizur@google.com clarkbrian@chromium.org Records which account was used for Save to Drive from the PDF viewer relative to the primary account. Recorded when an upload completes successfully. faizur@google.com clarkbrian@chromium.org Records the save request type of the Save to Drive retry operation from the PDF viewer. faizur@google.com clarkbrian@chromium.org Records the save request type of the Save to Drive operation from the PDF viewer. faizur@google.com clarkbrian@chromium.org Records the error type when a Save to Drive upload fails from the PDF viewer. Recorded when an upload fails. faizur@google.com clarkbrian@chromium.org Tracks the time from when a Save to Drive upload is started to when it completes successfully. faizur@google.com clarkbrian@chromium.org Records the status of a Save to Drive upload from the PDF viewer, and important intermediate steps. Recorded when status changes. thestig@chromium.org andyphan@chromium.org When loading a full-page PDF in the PDF Viewer, records whether the PDF is loaded from a file:// URL or not. rhalavati@chromium.org thestig@chromium.org Tracks if a PDF Searchifier added text to a page. This metric is recorded only once for each page, when the searchify process for the page is completed. rhalavati@chromium.org thestig@chromium.org Tracks the number of PDF documents that Searchify is run on, and whether Searchify could add any text to them or not. Previous metric (PDF.SearchifySuccessful) overcounted cases where searchify was run and did not add any results. anthonyvd@chromium.org ajgo@chromium.org Records the time spent in SkiaFontMapper's EnumFonts on Windows. This operation iterates over all installed system fonts, which may be inefficient and long on some devices (particularly slow disks and machines with large amounts of installed fonts). dhoss@chromium.org thestig@chromium.org Tracks versions of documents opened in the PDF viewer.