CompositorWorker is now always on the heap.

Consequently, update its IDL attribute to [GarbageCollected] and adjust
the return type of its constructor.

R=haraken
BUG=522949

Review URL: https://codereview.chromium.org/1309463002

git-svn-id: svn://svn.chromium.org/blink/trunk@200964 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/modules/compositorworker/CompositorWorker.cpp

@@ -20,7 +20,7 @@ inline CompositorWorker::CompositorWorker(ExecutionContext* context)
 {
 }
 
-PassRefPtrWillBeRawPtr<CompositorWorker> CompositorWorker::create(ExecutionContext* context, const String& url, ExceptionState& exceptionState)
+CompositorWorker* CompositorWorker::create(ExecutionContext* context, const String& url, ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
     Document* document = toDocument(context);
@@ -28,9 +28,9 @@ PassRefPtrWillBeRawPtr<CompositorWorker> CompositorWorker::create(ExecutionConte
         exceptionState.throwDOMException(InvalidAccessError, "The context provided is invalid.");
         return nullptr;
     }
-    RefPtrWillBeRawPtr<CompositorWorker> worker = adoptRefWillBeNoop(new CompositorWorker(context));
+    CompositorWorker* worker = new CompositorWorker(context);
     if (worker->initialize(context, url, exceptionState))
-        return worker.release();
+        return worker;
     return nullptr;
 }
 

third_party/WebKit/Source/modules/compositorworker/CompositorWorker.h

@@ -18,7 +18,7 @@ class WorkerGlobalScopeProxy;
 class CompositorWorker final : public InProcessWorkerBase {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<CompositorWorker> create(ExecutionContext*, const String& url, ExceptionState&);
+    static CompositorWorker* create(ExecutionContext*, const String& url, ExceptionState&);
     ~CompositorWorker() override;
 
     const AtomicString& interfaceName() const override;

third_party/WebKit/Source/modules/compositorworker/CompositorWorker.idl

@@ -6,9 +6,9 @@
     ActiveDOMObject,
     Constructor(DOMString scriptUrl),
     ConstructorCallWith=ExecutionContext,
+    GarbageCollected,
     RaisesException=Constructor,
     RuntimeEnabled=CompositorWorker,
-    WillBeGarbageCollected,
 ] interface CompositorWorker : EventTarget {
     attribute EventHandler onmessage;
     [PostMessage, RaisesException] void postMessage(SerializedScriptValue message, optional sequence<Transferable> transfer);