Get rid of the tryFast*alloc API.

Source/bindings/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 88 matching lines @@
 
 v8::Handle<v8::Value> throwNotEnoughArgumentsError(v8::Isolate* isolate)
 {
     return V8ThrowException::throwNotEnoughArgumentsError(isolate);
 }
 
 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
     virtual void* Allocate(size_t size) OVERRIDE
     {
         void* data;
-        if (WTF::ArrayBufferContents::allocateMemory(size, WTF::ArrayBufferContents::ZeroInitialize, data))
-            return data;
-        return 0;
+        WTF::ArrayBufferContents::allocateMemory(size, WTF::ArrayBufferContents::ZeroInitialize, data);
+        return data;
     }
 
     virtual void Free(void* data)
     {
         WTF::ArrayBufferContents::freeMemory(data);
     }
 
     virtual void Free(void* data, size_t size)
     {
         UNUSED_PARAM(size);
@@ skipping 445 matching lines @@
     return DOMWrapperWorld::isolatedWorld(v8::Context::GetCurrent());
 }
 
 v8::Local<v8::Value> getHiddenValueFromMainWorldWrapper(v8::Isolate* isolate, ScriptWrappable* wrappable, v8::Handle<v8::String> key)
 {
     v8::Local<v8::Object> wrapper = wrappable->newLocalWrapper(isolate);
     return wrapper.IsEmpty() ? v8::Local<v8::Value>() : wrapper->GetHiddenValue(key);
 }
 
 } // namespace WebCore