Remove ArrayBufferDeallocationObserver

Source/bindings/core/v8/V8Initializer.cpp

Index: Source/bindings/core/v8/V8Initializer.cpp
diff --git a/Source/bindings/core/v8/V8Initializer.cpp b/Source/bindings/core/v8/V8Initializer.cpp
index 874d0f1c3ff5454281e787edf3b29145e529d17b..2ce7497a24c177a68fa25f930299f5d583920d1b 100644
--- a/Source/bindings/core/v8/V8Initializer.cpp
+++ b/Source/bindings/core/v8/V8Initializer.cpp
@@ -387,6 +387,11 @@ class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
     }
 };
 
+void arrayBufferContentsAllocationListener(int size)
+{
+    v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(size);
+}
+
 } // namespace
 
 void V8Initializer::initializeMainThreadIfNeeded()
@@ -400,6 +405,7 @@ void V8Initializer::initializeMainThreadIfNeeded()
 
     DEFINE_STATIC_LOCAL(ArrayBufferAllocator, arrayBufferAllocator, ());
     gin::IsolateHolder::Initialize(gin::IsolateHolder::kNonStrictMode, &arrayBufferAllocator);
+    WTF::ArrayBufferContents::setAllocationListener(arrayBufferContentsAllocationListener);

[haraken, 2015/06/15 17:33:29]

I'd move this to initializeWithoutV8 in WebKit.cpp. See how
histogramEnumerationFunction in WebKit.cpp works with wtf/PartitionAlloc. We can
do a similar thing.

[binji, 2015/06/15 19:19:46]

Done.

 
     v8::Isolate* isolate = V8PerIsolateData::initialize();