Add Vector2d classes that represent offsets, instead of using Point.

content/browser/renderer_host/render_widget_host_impl.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_impl.h"
 
 #include <math.h>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1957 matching lines @@
   for (int i = 0; i < static_cast<int>(deferred_plugin_handles_.size()); i++) {
 #if defined(TOOLKIT_GTK)
     view_->CreatePluginContainer(deferred_plugin_handles_[i]);
 #endif
   }
 
   deferred_plugin_handles_.clear();
 #endif
 }
 
-const gfx::Point& RenderWidgetHostImpl::GetLastScrollOffset() const {
+const gfx::Vector2d& RenderWidgetHostImpl::GetLastScrollOffset() const {
   return last_scroll_offset_;
 }
 
 bool RenderWidgetHostImpl::ShouldForwardTouchEvent() const {
   // Always send a touch event if the renderer has a touch-event handler. It is
   // possible that a renderer stops listening to touch-events while there are
   // still events in the touch-queue. In such cases, the new events should still
   // get into the queue.
   return has_touch_handler_ || !touch_event_queue_->empty();
 }
@@ skipping 179 matching lines @@
     return;
 
   OnRenderAutoResized(new_size);
 }
 
 void RenderWidgetHostImpl::DetachDelegate() {
   delegate_ = NULL;
 }
 
 }  // namespace content