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

Source/core/html/canvas/WebGLProgram.cpp

 /*
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 #include "config.h"
 
 #include "core/html/canvas/WebGLProgram.h"
 
+#include "core/html/canvas/WebGLContextGroup.h"
 #include "core/html/canvas/WebGLRenderingContextBase.h"
 
 namespace WebCore {
 
-PassRefPtr<WebGLProgram> WebGLProgram::create(WebGLRenderingContextBase* ctx)
+PassRefPtrWillBeRawPtr<WebGLProgram> WebGLProgram::create(WebGLRenderingContextBase* ctx)
 {
-    return adoptRef(new WebGLProgram(ctx));
+    return adoptRefWillBeNoop(new WebGLProgram(ctx));
 }
 
 WebGLProgram::WebGLProgram(WebGLRenderingContextBase* ctx)
     : WebGLSharedObject(ctx)
     , m_linkStatus(false)
     , m_linkCount(0)
     , m_infoValid(true)
 {
     ScriptWrappable::init(this);
     setObject(ctx->webContext()->createProgram());
 }
 
 WebGLProgram::~WebGLProgram()
 {
+#if ENABLE(OILPAN)

[Mads Ager (chromium), 2014/07/11 09:15:01]

Instead of clearing the pointers here could we #ifdef the part of
deleteObjectImpl that we don't want to run? Or is it important that onDetached
is called on other paths that also lead to deleteObjectImpl?

+    m_vertexShader = nullptr;
+    m_fragmentShader = nullptr;
+#endif
+    detach();
     deleteObject(0);
 }
 
 void WebGLProgram::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject obj)
 {
     context3d->deleteProgram(obj);
     if (m_vertexShader) {
         m_vertexShader->onDetached(context3d);
         m_vertexShader = nullptr;
     }
@@ skipping 106 matching lines @@
 }
 
 void WebGLProgram::cacheInfoIfNeeded()
 {
     if (m_infoValid)
         return;
 
     if (!object())
         return;
 
-    blink::WebGraphicsContext3D* context = getAWebGraphicsContext3D();
+    if (!contextGroup())
+        return;
+    blink::WebGraphicsContext3D* context = contextGroup()->getAWebGraphicsContext3D();
     if (!context)
         return;
     GLint linkStatus = 0;
     context->getProgramiv(object(), GL_LINK_STATUS, &linkStatus);
     m_linkStatus = linkStatus;
     if (m_linkStatus)
         cacheActiveAttribLocations(context);
     m_infoValid = true;
 }
 
+void WebGLProgram::trace(Visitor* visitor)
+{
+    visitor->trace(m_vertexShader);
+    visitor->trace(m_fragmentShader);
+    WebGLSharedObject::trace(visitor);
 }
+
+}