[Webkit-unassigned] [Bug 117775] New: Don't retain for the main resource by default

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117775

           Summary: Don't retain for the main resource by default
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: ggaren at apple.com, koivisto at iki.fi,
                    barraclough at apple.com, akling at apple.com


Consider merging https://chromium.googlesource.com/chromium/blink/+/dad552a64c76e19cffe7c8bea07ffb86c21529be

Prior to this CL, we always retained the underlying data for the main resource.
Unfortunately, the main resource can be quite large.  For example, on Mobile
Gmail, retaining the main resource costs 1.5 MB.

After this CL, we clear the main resource after the load completes. In
subsequent CLs, I hope to remove the need to retain the main resource during
the loading process.

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