[Oilpan] Migrate classes under module/webgl onto oilpan heap

Source/modules/webgl/WebGLFramebuffer.h

Index: Source/modules/webgl/WebGLFramebuffer.h
diff --git a/Source/modules/webgl/WebGLFramebuffer.h b/Source/modules/webgl/WebGLFramebuffer.h
index a2cd23d861b955d2febb174dcd47448dd6d0bc07..e6f52a9cec80317208226939451cfa636469030b 100644
--- a/Source/modules/webgl/WebGLFramebuffer.h
+++ b/Source/modules/webgl/WebGLFramebuffer.h
@@ -39,7 +39,7 @@ class WebGLTexture;
 class WebGLFramebuffer final : public WebGLContextObject {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    class WebGLAttachment : public RefCountedWillBeGarbageCollectedFinalized<WebGLAttachment> {
+    class WebGLAttachment : public GarbageCollectedFinalized<WebGLAttachment> {
     public:
         virtual ~WebGLAttachment();
 
@@ -66,7 +66,7 @@ public:
 
     ~WebGLFramebuffer() override;
 
-    static PassRefPtrWillBeRawPtr<WebGLFramebuffer> create(WebGLRenderingContextBase*);
+    static WebGLFramebuffer* create(WebGLRenderingContextBase*);
 
     Platform3DObject object() const { return m_object; }
 
@@ -134,7 +134,7 @@ private:
 
     Platform3DObject m_object;
 
-    typedef WillBeHeapHashMap<GLenum, RefPtrWillBeMember<WebGLAttachment>> AttachmentMap;
+    typedef HeapHashMap<GLenum, Member<WebGLAttachment>> AttachmentMap;
 
     AttachmentMap m_attachments;