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

webkit/renderer/compositor_bindings/web_layer_impl_fixed_bounds.cc

 // Copyright 2013 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 "webkit/renderer/compositor_bindings/web_layer_impl_fixed_bounds.h"
 
 #include "cc/layers/layer.h"
 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/skia/include/utils/SkMatrix44.h"
@@ skipping 12 matching lines @@
 
 WebLayerImplFixedBounds::~WebLayerImplFixedBounds() {
 }
 
 void WebLayerImplFixedBounds::invalidateRect(const blink::WebFloatRect& rect) {
   // Partial invalidations seldom occur for such layers.
   // Simply invalidate the whole layer to avoid transformation of coordinates.
   invalidate();
 }
 
-void WebLayerImplFixedBounds::setAnchorPoint(
-    const blink::WebFloatPoint& anchor_point) {
-  if (anchor_point != this->anchorPoint()) {
-    layer_->SetAnchorPoint(anchor_point);
+void WebLayerImplFixedBounds::setTransformOrigin(
+    const blink::WebFloatPoint3D& transform_origin) {
+  if (transform_origin != this->transformOrigin()) {
+    layer_->SetTransformOrigin(transform_origin);
     UpdateLayerBoundsAndTransform();
   }
 }
 
 void WebLayerImplFixedBounds::setBounds(const blink::WebSize& bounds) {
   if (original_bounds_ != gfx::Size(bounds)) {
       original_bounds_ = bounds;
       UpdateLayerBoundsAndTransform();
   }
 }
@@ skipping 23 matching lines @@
     const gfx::Transform& transform) {
   if (original_transform_ != transform) {
     original_transform_ = transform;
     UpdateLayerBoundsAndTransform();
   }
 }
 
 void WebLayerImplFixedBounds::UpdateLayerBoundsAndTransform() {
   if (fixed_bounds_.IsEmpty() || original_bounds_.IsEmpty() ||
       fixed_bounds_ == original_bounds_ ||
-      // For now fall back to non-fixed bounds for non-zero anchor point.
+      // For now fall back to non-fixed bounds for non-zero transform origin.
       // TODO(wangxianzhu): Support non-zero anchor point for fixed bounds.
-      anchorPoint().x || anchorPoint().y) {
+      transformOrigin().x ||
+      transformOrigin().y) {
     layer_->SetBounds(original_bounds_);
     layer_->SetTransform(original_transform_);
     return;
   }
 
   layer_->SetBounds(fixed_bounds_);
 
   // Apply bounds scale (bounds/fixed_bounds) over original transform.
   gfx::Transform transform_with_bounds_scale(original_transform_);
   float bounds_scale_x =
       static_cast<float>(original_bounds_.width()) / fixed_bounds_.width();
   float bounds_scale_y =
       static_cast<float>(original_bounds_.height()) / fixed_bounds_.height();
   transform_with_bounds_scale.Scale(bounds_scale_x, bounds_scale_y);
   layer_->SetTransform(transform_with_bounds_scale);
 }
 
 }  // namespace webkit