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

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index a4e90b651c7cd182ca33f059c6a787002f7a0297..58a90eace01f74bf1a0bca656ba6f7f81264d688 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -195,7 +195,7 @@ RenderWidgetHostViewAndroid::GetNativeViewAccessible() {
 }
 
 void RenderWidgetHostViewAndroid::MovePluginWindows(
-    const gfx::Point& scroll_offset,
+    const gfx::Vector2d& scroll_offset,
     const std::vector<webkit::npapi::WebPluginGeometry>& moves) {
   // We don't have plugin windows on Android. Do nothing. Note: this is called
   // from RenderWidgetHost::OnMsgUpdateRect which is itself invoked while
@@ -518,7 +518,7 @@ void RenderWidgetHostViewAndroid::SetCachedPageScaleFactorLimits(
 }
 
 void RenderWidgetHostViewAndroid::UpdateFrameInfo(
-    const gfx::Point& scroll_offset,
+    const gfx::Vector2d& scroll_offset,
     float page_scale_factor,
     const gfx::Size& content_size) {
   if (content_view_core_) {