cc: Invalidate the full tiled layer when contents scale changes.

cc/layer_tree_host_unittest_animation.cc

 // Copyright 2012 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.
 
 #include "cc/layer_tree_host.h"
 
 #include "cc/animation_curve.h"
 #include "cc/layer.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
@@ skipping 363 matching lines @@
 
   virtual void beginTest() OVERRIDE {
     postAddAnimationToMainThread(update_check_layer_.get());
   }
 
   virtual void commitCompleteOnThread(LayerTreeHostImpl*) OVERRIDE {
     endTest();
   }
 
   virtual void afterTest() OVERRIDE {
-    // update() should have been called once, proving that the layer was not
+    // update() should have been called, proving that the layer was not
     // skipped.
-    EXPECT_EQ(1, update_check_layer_->update_count());
+    EXPECT_NE(0, update_check_layer_->update_count());
 
     // clear update_check_layer_ so LayerTreeHost dies.
     update_check_layer_ = NULL;
   }
 
  private:
   FakeContentLayerClient client_;
   scoped_refptr<FakeContentLayer> update_check_layer_;
 };
 
@@ skipping 131 matching lines @@
 
  private:
   int num_commit_complete_;
   int num_draw_layers_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostAnimationTestContinuousAnimate)
 
 }  // namespace
 }  // namespace cc