Oilpan: Remove most WillBe types from the code base

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CompositorWorkerThread_h
 #define CompositorWorkerThread_h
 
 #include "core/workers/WorkerThread.h"
 #include "modules/ModulesExport.h"
 
@@ skipping 12 matching lines @@
     // Returns the shared backing thread for all CompositorWorkers.
     static WebThreadSupportingGC* sharedBackingThread();
 
     static bool hasThreadForTest();
     static bool hasIsolateForTest();
 
 protected:
     CompositorWorkerThread(PassRefPtr<WorkerLoaderProxy>, WorkerObjectProxy&, double timeOrigin);
 
     // WorkerThread:
-    PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtr<WorkerThreadStartupData>) override;
+    RawPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtr<WorkerThreadStartupData>) override;
     WebThreadSupportingGC& backingThread() override;
     void didStartWorkerThread() override { }
     void willStopWorkerThread() override { }
     void initializeBackingThread() override;
     void shutdownBackingThread() override;
     v8::Isolate* initializeIsolate() override;
     void willDestroyIsolate() override;
     void destroyIsolate() override;
     void terminateV8Execution() override;
 
 private:
     WorkerObjectProxy& m_workerObjectProxy;
     double m_timeOrigin;
 };
 
 } // namespace blink
 
 #endif // CompositorWorkerThread_h