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

Source/core/html/TextMetrics.h

Index: Source/core/html/TextMetrics.h
diff --git a/Source/core/html/TextMetrics.h b/Source/core/html/TextMetrics.h
index 5a98378c357142c53a1ac8a7dc075fe10b8c8b45..efd88ad30585924da80115962e0a80fa2105e8c3 100644
--- a/Source/core/html/TextMetrics.h
+++ b/Source/core/html/TextMetrics.h
@@ -27,14 +27,15 @@
 #define TextMetrics_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
-class TextMetrics : public RefCounted<TextMetrics>, public ScriptWrappable {
+class TextMetrics FINAL : public RefCountedWillBeGarbageCollectedFinalized<TextMetrics>, public ScriptWrappable {

[haraken, 2014/07/03 04:40:29]

Now that ScriptWrappable doesn't need a destructor, you can drop Finalized.

[sof, 2014/07/03 07:25:48]

Gone.

 public:
-    static PassRefPtr<TextMetrics> create() { return adoptRef(new TextMetrics); }
+    static PassRefPtrWillBeRawPtr<TextMetrics> create() { return adoptRefWillBeNoop(new TextMetrics); }
 
     float width() const { return m_width; }
     void setWidth(float w) { m_width = w; }
@@ -72,6 +73,8 @@ public:
     float ideographicBaseline() const { return m_ideographicBaseline; }
     void setIdeographicBaseline(float ideographicBaseline) { m_ideographicBaseline = ideographicBaseline; }
 
+    void trace(Visitor*) { }
+
 private:
     TextMetrics()
         : m_width(0)