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

content/browser/browser_plugin/browser_plugin_guest.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/browser_plugin/browser_plugin_guest.h"
 
 #include <algorithm>
 
 #include "base/string_util.h"
 #include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
@@ skipping 351 matching lines @@
 void BrowserPluginGuest::SetFocus(bool focused) {
   RenderViewHost* render_view_host = web_contents()->GetRenderViewHost();
   render_view_host->Send(
       new ViewMsg_SetFocus(render_view_host->GetRoutingID(), focused));
 }
 
 void BrowserPluginGuest::ShowWidget(RenderViewHost* render_view_host,
                                     int route_id,
                                     const gfx::Rect& initial_pos) {
   gfx::Rect screen_pos(initial_pos);
-  screen_pos.Offset(guest_rect_.origin());
+  screen_pos.Offset(guest_rect_.DistanceFromOrigin());
   static_cast<WebContentsImpl*>(web_contents())->ShowCreatedWidget(route_id,
                                                                    screen_pos);
 }
 
 void BrowserPluginGuest::SetCursor(const WebCursor& cursor) {
   cursor_ = cursor;
 }
 
 void BrowserPluginGuest::DidStartProvisionalLoadForFrame(
     int64 frame_id,
@@ skipping 91 matching lines @@
     default:
       break;
   }
 }
 
 void BrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
   embedder_web_contents_->GetRenderProcessHost()->Send(msg);
 }
 
 }  // namespace content