Tests V8 code cache for javascript resources

--- Trace events related to code caches ------
Load [A] 1st time. Produce timestamp. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
Load [A] 2nd time. Produce code cache. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        notStreamedReason : "already used streamed data"
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
v8.produceCache Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        producedCacheSize : <number>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.produceCache"
}
Text details for v8.produceCache: v8-cache-script.cgi:1
Load [A] 3rd time. 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-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
Load [B]. Should not use the cached code. -->
v8.compile Properties:
{
    data : {
        columnNumber : 0
        lineNumber : 0
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
Load [A] again from MemoryCache. Should use the cached code. -->
v8.compile Properties:
{
    data : {
        cacheRejected : false
        columnNumber : 0
        consumedCacheSize : <number>
        lineNumber : 0
        notStreamedReason : "already used streamed data"
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
Clear [A] from MemoryCache. -->
Load [A] from Disk Cache. -->
v8.compile Properties:
{
    data : {
        cacheRejected : false
        columnNumber : 0
        consumedCacheSize : <number>
        lineNumber : 0
        notStreamedReason : "script has code-cache available"
        streamed : <boolean>
        url : .../devtools/resources/v8-cache-script.cgi
    }
    endTime : <number>
    startTime : <number>
    type : "v8.compile"
}
Text details for v8.compile: v8-cache-script.cgi:1
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