Fix 3 panel related bugs.

chrome/browser/ui/panels/panel_browser_view.h

 // Copyright (c) 2011 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_UI_PANELS_PANEL_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_VIEW_H_
 #pragma once
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 111 matching lines @@
 
   // Is the panel being closed? Do not use it when it is closed.
   bool closed_;
 
   // Is the panel receiving the focus?
   bool focused_;
 
   // Is the mouse button currently down?
   bool mouse_pressed_;
 
-  // Location the mouse was pressed at. Used to detect drag and drop.
-  gfx::Point mouse_pressed_point_;
+  // Location the mouse was pressed at or dragged to. Used in drag-and-drop.
+  // This point is represented in the screen coordinate system.
+  gfx::Point mouse_location_;
 
   // Timestamp when the mouse was pressed. Used to detect long click.
   base::TimeTicks mouse_pressed_time_;
 
   // Is the titlebar currently being dragged?  That is, has the cursor
   // moved more than kDragThreshold away from its starting position?
   MouseDraggingState mouse_dragging_state_;
 
   // Used to animate the bounds change.
   scoped_ptr<ui::SlideAnimation> bounds_animator_;
   gfx::Rect animation_start_bounds_;
 
   // Is the panel in highlighted state to draw people's attention?
   bool is_drawing_attention_;
 
   // Timestamp to prevent minimizing the panel when the user clicks the titlebar
   // to clear the attension state.
   base::TimeTicks attention_cleared_time_;
 
   // The last view that had focus in the panel. This is saved so that focus can
   // be restored properly when a drag ends.
   views::View* old_focused_view_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelBrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_VIEW_H_