Reland: Reland: Implement new Blink IDL attribute [SetReference]

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 189 matching lines @@
     if (!page->mainFrame()->spellChecker().isContinuousSpellCheckingEnabled())
         page->mainFrame()->spellChecker().toggleContinuousSpellChecking();
     if (page->mainFrame()->editor().isOverwriteModeEnabled())
         page->mainFrame()->editor().toggleOverwriteModeEnabled();
 }
 
 Internals::Internals(Document* document)
     : ContextLifecycleObserver(document)
     , m_runtimeFlags(InternalRuntimeFlags::create())
     , m_scrollingCoordinator(document->page() ? document->page()->scrollingCoordinator() : 0)
+    , m_gcWithoutContextTimer(this, &Internals::garbageCollectV8WithoutContextTimerFired)
 {
 }
 
 Document* Internals::contextDocument() const
 {
     return toDocument(executionContext());
 }
 
 Frame* Internals::frame() const
 {
@@ skipping 2013 matching lines @@
     if (!sharedContext)
         return false;
     sharedContext->extensions()->loseContextCHROMIUM(Extensions3D::GUILTY_CONTEXT_RESET_ARB, Extensions3D::INNOCENT_CONTEXT_RESET_ARB);
     // To prevent tests that call loseSharedGraphicsContext3D from being
     // flaky, we call finish so that the context is guaranteed to be lost
     // synchronously (i.e. before returning).
     sharedContext->finish();
     return true;
 }
 
+void Internals::garbageCollectV8WithoutContext()

[haraken, 2013/10/29 01:14:53]

garbageCollectV8WithoutContext => collectGarbageWithoutV8Context

+{
+    m_gcWithoutContextTimer.startOneShot(0);

[haraken, 2013/10/29 01:14:53]

Why do you need a timer?

 }
+
+void Internals::garbageCollectV8WithoutContextTimerFired(Timer<Internals>*)
+{
+    const int largeEnoughValueToTriggerMajorGC = 10000;
+    for (int i = 0; i < 100; ++i)
+        v8::V8::IdleNotification(largeEnoughValueToTriggerMajorGC);

[haraken, 2013/10/29 01:14:53]

This is not a reliable way to trigger GC. Instead you can call:

  V8ScriptRunner::compileAndRunInternalScript(v8String("if (gc) gc();",
isolate), isolate);

+}
+
+}