Get rid of graphics layer anchor points, and replace with transform origin.

cc/trees/layer_tree_host_unittest_scroll.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/trees/layer_tree_host.h"
 
 #include "base/memory/weak_ptr.h"
 #include "cc/layers/content_layer.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 435 matching lines @@
   virtual void SetupTree() OVERRIDE {
     layer_tree_host()->SetDeviceScaleFactor(device_scale_factor_);
 
     scoped_refptr<Layer> root_layer = Layer::Create();
     root_layer->SetBounds(gfx::Size(10, 10));
 
     root_scroll_layer_ = ContentLayer::Create(&fake_content_layer_client_);
     root_scroll_layer_->SetBounds(gfx::Size(110, 110));
 
     root_scroll_layer_->SetPosition(gfx::Point());
-    root_scroll_layer_->SetAnchorPoint(gfx::PointF());
 
     root_scroll_layer_->SetIsDrawable(true);
     root_scroll_layer_->SetScrollClipLayerId(root_layer->id());
     root_scroll_layer_->SetIsContainerForFixedPositionLayers(true);
     root_layer->AddChild(root_scroll_layer_);
 
     child_layer_ = ContentLayer::Create(&fake_content_layer_client_);
     child_layer_->set_did_scroll_callback(
         base::Bind(&LayerTreeHostScrollTestCaseWithChild::DidScroll,
                    base::Unretained(this)));
     child_layer_->SetBounds(gfx::Size(110, 110));
 
     if (scroll_child_layer_) {
       // Scrolls on the child layer will happen at 5, 5. If they are treated
       // like device pixels, and device scale factor is 2, then they will
       // be considered at 2.5, 2.5 in logical pixels, and will miss this layer.
       child_layer_->SetPosition(gfx::Point(5, 5));
     } else {
       // Adjust the child layer horizontally so that scrolls will never hit it.
       child_layer_->SetPosition(gfx::Point(60, 5));
     }
-    child_layer_->SetAnchorPoint(gfx::PointF());
 
     child_layer_->SetIsDrawable(true);
     child_layer_->SetScrollClipLayerId(root_layer->id());
     child_layer_->SetBounds(root_scroll_layer_->bounds());
     root_scroll_layer_->AddChild(child_layer_);
 
     if (scroll_child_layer_) {
       expected_scroll_layer_ = child_layer_;
       expected_no_scroll_layer_ = root_scroll_layer_;
     } else {
@@ skipping 713 matching lines @@
     }
     LayerTreeHostScrollTestLayerStructureChange* owner_;
     Layer* layer_;
   };
 
   Layer* CreateScrollLayer(Layer* parent, FakeLayerScrollClient* client) {
     scoped_refptr<Layer> scroll_layer =
         ContentLayer::Create(&fake_content_layer_client_);
     scroll_layer->SetBounds(gfx::Size(110, 110));
     scroll_layer->SetPosition(gfx::Point(0, 0));
-    scroll_layer->SetAnchorPoint(gfx::PointF());
     scroll_layer->SetIsDrawable(true);
     scroll_layer->SetScrollClipLayerId(parent->id());
     scroll_layer->SetBounds(gfx::Size(parent->bounds().width() + 100,
                                       parent->bounds().height() + 100));
     scroll_layer->set_did_scroll_callback(base::Bind(
         &FakeLayerScrollClient::DidScroll, base::Unretained(client)));
     client->owner_ = this;
     client->layer_ = scroll_layer.get();
     parent->AddChild(scroll_layer);
     return scroll_layer.get();
@@ skipping 12 matching lines @@
     RunTest(true, false, false);
 }
 
 TEST_F(LayerTreeHostScrollTestLayerStructureChange, ScrollDestroyWholeTree) {
     scroll_destroy_whole_tree_ = true;
     RunTest(true, false, false);
 }
 
 }  // namespace
 }  // namespace cc