Re-apply the patch after v8 roll to r11000.

Re-apply the patch after v8 roll to r11000.

Web Inspector: move heap snapshot nodes data to external array.
https://bugs.webkit.org/show_bug.cgi?id=79911

Reviewed by Vsevolod Vlasov.

Source/WebCore:

Tests:
heap-shapshot.html
heap-shapshot-loader.html

* inspector/front-end/HeapSnapshot.js:
(WebInspector.Int32Array):
(WebInspector.Int32Array.prototype.get array):
(WebInspector.HeapSnapshotLoader.prototype._parseNodes):
(WebInspector.HeapSnapshotLoader.prototype.pushJSONChunk):
(WebInspector.HeapSnapshot):
(WebInspector.HeapSnapshot.prototype._init):

LayoutTests:

* inspector/profiler/heap-snapshot-loader.html:
* inspector/profiler/heap-snapshot-test.js:
(initialize_HeapSnapshotTest.InspectorTest.createHeapSnapshotMockRaw):
(initialize_HeapSnapshotTest.InspectorTest.createHeapSnapshotMock):
(initialize_HeapSnapshotTest.InspectorTest.createHeapSnapshotMockWithDOM):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@110423 268f45cc-cd09-0410-ab3c-d52691b4dbfc