Removed PassRefPtr to RefPtr copies from unit tests.

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 51 matching lines @@
 using testing::_;
 
 namespace blink {
 
 namespace {
 
 class Canvas2DLayerBridgePtr {
  public:
   Canvas2DLayerBridgePtr() {}
   Canvas2DLayerBridgePtr(PassRefPtr<Canvas2DLayerBridge> layer_bridge)
-      : layer_bridge_(layer_bridge) {}
+      : layer_bridge_(std::move(layer_bridge)) {}
 
   ~Canvas2DLayerBridgePtr() { Clear(); }
 
   void Clear() {
     if (layer_bridge_) {
       layer_bridge_->BeginDestruction();
       layer_bridge_.Clear();
     }
   }
 
   void operator=(PassRefPtr<Canvas2DLayerBridge> layer_bridge) {
     DCHECK(!layer_bridge_);
-    layer_bridge_ = layer_bridge;
+    layer_bridge_ = std::move(layer_bridge);
   }
 
   Canvas2DLayerBridge* operator->() { return layer_bridge_.Get(); }
   Canvas2DLayerBridge* Get() { return layer_bridge_.Get(); }
 
  private:
   RefPtr<Canvas2DLayerBridge> layer_bridge_;
 };
 
 class FakeGLES2InterfaceWithImageSupport : public FakeGLES2Interface {
@@ skipping 1283 matching lines @@
   EXPECT_FALSE(bridge->HasRecordedDrawCommands());
   ::testing::Mock::VerifyAndClearExpectations(&gl);
 
   EXPECT_CALL(gl, Flush()).Times(1);
   bridge->FlushGpu();
   EXPECT_FALSE(bridge->HasRecordedDrawCommands());
   ::testing::Mock::VerifyAndClearExpectations(&gl);
 }
 
 }  // namespace blink