Tests V8 code cache for resources revalidated with 304.

--- Begin trace events related to code cache. ------
1st load. Produce timestamp. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-revalidated-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-revalidated-script.cgi:1
2nd load. Produce code cache. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        notStreamedReason : "already used streamed data"
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-revalidated-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-revalidated-script.cgi:1
v8.produceCache Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        producedCacheSize : <number>
        url : .../devtools/resources/v8-cache-revalidated-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.produceCache"
}
Text details for v8.produceCache: v8-cache-revalidated-script.cgi:1
3rd load. Consume code cache. -->
v8.compile Properties:
{
    data : {
        cacheRejected : false
        columnNumber : 0
        consumedCacheSize : <number>
        lineNumber : 0
        notStreamedReason : "already used streamed data"
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-revalidated-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-revalidated-script.cgi:1
Clear the resource from the MemoryCache. -->
Load the resource with revalidation. The code cache got dropped because its timestamp did not match the one of the request. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-revalidated-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-revalidated-script.cgi:1
----- End trace events related to code cache. ------