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

Source/core/html/canvas/WebGLTexture.cpp

Index: Source/core/html/canvas/WebGLTexture.cpp
diff --git a/Source/core/html/canvas/WebGLTexture.cpp b/Source/core/html/canvas/WebGLTexture.cpp
index 292974230ea6f5744821e6c55e2dc18bb7dd5691..3affd7aac301abcb8ea297ac23057ed478bcef51 100644
--- a/Source/core/html/canvas/WebGLTexture.cpp
+++ b/Source/core/html/canvas/WebGLTexture.cpp
@@ -31,9 +31,9 @@
 
 namespace WebCore {
 
-PassRefPtr<WebGLTexture> WebGLTexture::create(WebGLRenderingContextBase* ctx)
+PassRefPtrWillBeRawPtr<WebGLTexture> WebGLTexture::create(WebGLRenderingContextBase* ctx)
 {
-    return adoptRef(new WebGLTexture(ctx));
+    return adoptRefWillBeNoop(new WebGLTexture(ctx));
 }
 
 WebGLTexture::WebGLTexture(WebGLRenderingContextBase* ctx)
@@ -56,6 +56,7 @@ WebGLTexture::WebGLTexture(WebGLRenderingContextBase* ctx)
 
 WebGLTexture::~WebGLTexture()
 {
+    detach();
     deleteObject(0);
 }