Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h

Index: third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h
diff --git a/third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h b/third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h
index d31e65a207268c5b9346fc84c4302a4dc016afb7..62f9fd8f611352d9adc049d28184ac2142e5f453 100644
--- a/third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h
+++ b/third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h
@@ -70,9 +70,9 @@ public:
         Factory() {}
         ~Factory() override {}
 
-        PassOwnPtrWillBeRawPtr<CanvasRenderingContext> create(HTMLCanvasElement* canvas, const CanvasContextCreationAttributes& attrs, Document& document) override
+        RawPtr<CanvasRenderingContext> create(HTMLCanvasElement* canvas, const CanvasContextCreationAttributes& attrs, Document& document) override
         {
-            return adoptPtrWillBeNoop(new CanvasRenderingContext2D(canvas, attrs, document));
+            return (new CanvasRenderingContext2D(canvas, attrs, document));
         }
         CanvasRenderingContext::ContextType contextType() const override { return CanvasRenderingContext::Context2d; }
         void onError(HTMLCanvasElement*, const String& error) override { }
@@ -133,8 +133,8 @@ public:
     void save();
     void restore();
 
-    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> currentTransform() const;
-    void setCurrentTransform(PassRefPtrWillBeRawPtr<SVGMatrixTearOff>);
+    RawPtr<SVGMatrixTearOff> currentTransform() const;
+    void setCurrentTransform(RawPtr<SVGMatrixTearOff>);
 
     void scale(double sx, double sy);
     void rotate(double angleInRadians);
@@ -304,8 +304,8 @@ private:
 
     WebLayer* platformLayer() const override;
 
-    WillBeHeapVector<OwnPtrWillBeMember<CanvasRenderingContext2DState>> m_stateStack;
-    PersistentWillBeMember<HitRegionManager> m_hitRegionManager;
+    HeapVector<Member<CanvasRenderingContext2DState>> m_stateStack;
+    Member<HitRegionManager> m_hitRegionManager;
     AntiAliasingMode m_clipAntialiasing;
     bool m_hasAlpha;
     LostContextMode m_contextLostMode;