dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each image processed by the image annotation service, records whether or not results for the image already existed in the client-side cache. A hit means that image data was not transmitted to the image annotation server. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each request made by a client feature to the image annotation service, reports the final status of the service response. Warning: This histogram was expired from 2022-10-30 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each failed request made by a client feature to the image annotation service, reports the reason for the failure. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each annotation backend run by the image annotation server, records the gRPC status reported. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each image sent from a client feature to the image annotation service, reports the image's final size (in kilobytes) after resizing and reencoding. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each annotation backend run by the image annotation server, records whether or not the backend is recognised by this version of Chrome. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each image request sent to the image annotation server, records whether or not the description backend is included among the requested backends. The description backend will not be included when the image is known to violate the description model policy (i.e. be too small or have too-high an aspect ratio). Warning: This histogram was expired from M105 to M117; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each image request sent to the image annotation server, records whether or not the icon backend is included among the requested backends. The icon backend will not be included when the image is known to violate the icon model policy (i.e. be too large or have too-high an aspect ratio). Warning: This histogram was expired from M105 to M117; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each non-empty response sent from the image annotation server, records whether or not JSON data were successfully parsed from the response body. Warning: This histogram was expired from 2022-10-31 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each pixel fetch request sent from the image annotation service to a client feature, records whether or not encoded pixel data were successfully returned to the service. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each HTTP response from the image annotation server, reports the associated HTTP code. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each HTTP response from the image annotation server, reports the time elapsed (in milliseconds) since the corresponding request was sent. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each HTTP request sent to the image annotation server, reports the net error (or OK status) of the request. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each HTTP request sent to the image annotation server, reports the size of the request. Measured in kilobytes, since a request can contain the pixel data of multiple images. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each HTTP response from the image annotation server, reports the response size in bytes. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each image sent from a client feature to the image annotation service, reports the image's original (i.e. pre-scaling) area in pixels. Images with pixel count above a certain threshold will be resized prior to transmission. Warning: This histogram was expired from 2022-04-24 to 2023-06-23; data may be missing. Use data from M117+ only. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each annotation of the given type returned by the image annotation server, records the confidence (as a percentage) produced by the ML model for the annotation. {ImageAnnotationServiceAnnotationType} This metric was recorded with a wrong name before M151. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each annotation of the given type returned by the image annotation server, records whether or not the text of the annotation was empty. This is sometimes valid, e.g. for text extraction (OCR) on an image that does not contain any text. {ImageAnnotationServiceAnnotationType} This metric was recorded with a broken name before M151. dtseng@chromium.org amoylan@chromium.org mschillaci@google.com chrome-a11y-core@google.com For each annotation backend run by the image annotation server, records the gRPC status reported. {ImageAnnotationServiceAnnotationType} This metric was recorded with a broken name before M151. wylieb@google.com skym@chromium.org The total number of metadata entries in the image fetcher cache metadata database for a given cache strategy. Recorded during cache eviction process. {ImageFetcherCacheStrategy} wylieb@google.com skym@chromium.org The total size of the cache for a given cache strategy. Recorded during cache eviction process. {ImageFetcherCacheStrategy} wylieb@google.com skym@chromium.org Events that track the lifecycle and performance of the cached_image_fetcher. The events reported include: success/failure conditions, various recoverable errors and a couple of dead-end errors. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes for cached_image_fetcher to load an image from the cache in Java. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes for cached_image_fetcher to load an image from the cache in native. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes for cached_image_fetcher to load an image from native code. Only recorded on successful loads. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes for cached_image_fetcher to load an image from the network after a cache hit. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes for cached_image_fetcher to load an image from the network. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time it takes to load an image's metadata from the metadata store. Only recorded for cached image fetcher. wylieb@google.com skym@chromium.org Android: The integer status code of network requests made by the image data fetcher. This code includes both protocol(1xx-5xx) and non-protocol(-xxx) errors. Recorded when a request completes. {ImageFetcherClients} wylieb@google.com skym@chromium.org The time since the last LRU eviction from the image cache. Recorded when two LRU evictions occur within closure proximity to one another. Will be used to determine if LRU eviction is happening too frequently.