Oilpan: move 2D Canvas and WebGL objects to the heap.

Source/core/html/canvas/WebGLShader.cpp

 /*
  * Copyright (C) 2009 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 
 #include "core/html/canvas/WebGLShader.h"
 
 #include "core/html/canvas/WebGLRenderingContextBase.h"
 
 namespace blink {
 
-PassRefPtr<WebGLShader> WebGLShader::create(WebGLRenderingContextBase* ctx, GLenum type)
+PassRefPtrWillBeRawPtr<WebGLShader> WebGLShader::create(WebGLRenderingContextBase* ctx, GLenum type)
 {
-    return adoptRef(new WebGLShader(ctx, type));
+    return adoptRefWillBeNoop(new WebGLShader(ctx, type));
 }
 
 WebGLShader::WebGLShader(WebGLRenderingContextBase* ctx, GLenum type)
     : WebGLSharedObject(ctx)
     , m_type(type)
     , m_source("")
 {
     ScriptWrappable::init(this);
     setObject(ctx->webContext()->createShader(type));
 }
 
 WebGLShader::~WebGLShader()
 {
-    deleteObject(0);
+    // Always call detach here to ensure that platform object deletion
+    // happens with Oilpan enabled. It keeps the code regular to do it
+    // with or without Oilpan enabled.
+    //
+    // See comment in WebGLBuffer's destructor for additional
+    // information on why this is done for WebGLSharedObject-derived
+    // objects.
+    detachAndDeleteObject();
 }
 
 void WebGLShader::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject object)
 {
     context3d->deleteShader(object);
 }
 
 }