Consider the popup window position when the window shows upward. This patch depends on WebKit patch.

chrome/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 #import <QuartzCore/CALayer.h>
@@ skipping 169 matching lines @@
   RenderWidgetHostViewCocoa* native_view() const { return cocoa_view_; }
 
   // Implementation of RenderWidgetHostView:
   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
                            const gfx::Rect& pos);
   virtual void InitAsFullscreen();
   virtual RenderWidgetHost* GetRenderWidgetHost() const;
   virtual void DidBecomeSelected();
   virtual void WasHidden();
   virtual void SetSize(const gfx::Size& size);
+  virtual void SetBounds(const gfx::Rect& rect);
   virtual gfx::NativeView GetNativeView();
   virtual void MovePluginWindows(
       const std::vector<webkit::npapi::WebPluginGeometry>& moves);
   virtual void Focus();
   virtual void Blur();
   virtual bool HasFocus();
   virtual void Show();
   virtual void Hide();
   virtual bool IsShowing();
   virtual gfx::Rect GetViewBounds() const;
@@ skipping 178 matching lines @@
 
   // When rendering transitions from gpu to software, the gpu widget can't be
   // hidden until the software backing store has been updated. This variable is
   // set when the gpu widget needs to be hidden once a paint is completed.
   bool needs_gpu_visibility_update_after_repaint_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_