Account for failure of coordinate space transformations in browser

content/browser/renderer_host/render_widget_host_view_base.cc

 // Copyright (c) 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 "content/browser/renderer_host/render_widget_host_view_base.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
@@ skipping 422 matching lines @@
     const gfx::Point& point) {
   return point;
 }
 
 gfx::PointF RenderWidgetHostViewBase::TransformPointToRootCoordSpaceF(
     const gfx::PointF& point) {
   return gfx::PointF(TransformPointToRootCoordSpace(
       gfx::ToRoundedPoint(point)));
 }
 
-gfx::Point RenderWidgetHostViewBase::TransformPointToLocalCoordSpace(
+bool RenderWidgetHostViewBase::TransformPointToLocalCoordSpace(
     const gfx::Point& point,
-    const cc::SurfaceId& original_surface) {
-  return point;
+    const cc::SurfaceId& original_surface,
+    gfx::Point* transformed_point) {
+  *transformed_point = point;
+  return true;
 }
 
-gfx::Point RenderWidgetHostViewBase::TransformPointToCoordSpaceForView(
+bool RenderWidgetHostViewBase::TransformPointToCoordSpaceForView(
     const gfx::Point& point,
-    RenderWidgetHostViewBase* target_view) {
+    RenderWidgetHostViewBase* target_view,
+    gfx::Point* transformed_point) {
   NOTREACHED();
-  return point;
+  return true;
 }
 
 bool RenderWidgetHostViewBase::IsRenderWidgetHostViewGuest() {
   return false;
 }
 
 bool RenderWidgetHostViewBase::IsRenderWidgetHostViewChildFrame() {
   return false;
 }
 
@@ skipping 56 matching lines @@
 
 bool RenderWidgetHostViewBase::IsChildFrameForTesting() const {
   return false;
 }
 
 cc::SurfaceId RenderWidgetHostViewBase::SurfaceIdForTesting() const {
   return cc::SurfaceId();
 }
 
 }  // namespace content