[Webkit-unassigned] [Bug 89568] New: Web Inspector: partially instrument DOM Tree native memory

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=89568

           Summary: Web Inspector: partially instrument DOM Tree native
                    memory
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: loislo at chromium.org
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org, alexeif at chromium.org
            Blocks: 87262


This patch is a part of native memory instrumentation.

It is not possible to do this in a single patch because DOM structure has too many different classes.
The idea is to count the size of each reported object and call reportMemoryUsage if such method was defined in the object's class.
All the instrumented classes will report their type DOM or CSS, not instrumented classes will be counted as Unknown.

the sample test output:

RESULT native-memory-snapshot: DOM= 400 kB
RESULT native-memory-snapshot: DOMTreeUnknown= 46 kB
RESULT native-memory-snapshot: DOMTreeDOM= 337 kB
RESULT native-memory-snapshot: DOMTreeCSS= 15 kB

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