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

Source/core/html/canvas/WebGLActiveInfo.h

Index: Source/core/html/canvas/WebGLActiveInfo.h
diff --git a/Source/core/html/canvas/WebGLActiveInfo.h b/Source/core/html/canvas/WebGLActiveInfo.h
index 51b6e77b16ffc2895abc4e0c894806d7b59578be..9d172ba5fca066b3c833ae40819c7f1f9c70537c 100644
--- a/Source/core/html/canvas/WebGLActiveInfo.h
+++ b/Source/core/html/canvas/WebGLActiveInfo.h
@@ -34,16 +34,18 @@
 
 namespace blink {
 
-class WebGLActiveInfo : public RefCounted<WebGLActiveInfo>, public ScriptWrappable {
+class WebGLActiveInfo FINAL : public RefCountedWillBeGarbageCollectedFinalized<WebGLActiveInfo>, public ScriptWrappable {
 public:
-    static PassRefPtr<WebGLActiveInfo> create(const String& name, GLenum type, GLint size)
+    static PassRefPtrWillBeRawPtr<WebGLActiveInfo> create(const String& name, GLenum type, GLint size)
     {
-        return adoptRef(new WebGLActiveInfo(name, type, size));
+        return adoptRefWillBeNoop(new WebGLActiveInfo(name, type, size));
     }
     String name() const { return m_name; }
     GLenum type() const { return m_type; }
     GLint size() const { return m_size; }
 
+    void trace(Visitor*) { }
+
 private:
     WebGLActiveInfo(const String& name, GLenum type, GLint size)
         : m_name(name)