Support detaching/attaching panels via inter-strip drags.

chrome/browser/ui/panels/panel_browser_view.h

Index: chrome/browser/ui/panels/panel_browser_view.h
diff --git a/chrome/browser/ui/panels/panel_browser_view.h b/chrome/browser/ui/panels/panel_browser_view.h
index 00798fbd277307659463744bdf2369bd073f531c..8080fc0c734392fa54f958622b287b4adb72fdd4 100644
--- a/chrome/browser/ui/panels/panel_browser_view.h
+++ b/chrome/browser/ui/panels/panel_browser_view.h
@@ -38,8 +38,9 @@ class PanelBrowserView : public BrowserView,
 
   // Called from frame view when titlebar receives a mouse event.
   // Return true if the event is handled.
-  bool OnTitlebarMousePressed(const gfx::Point& location);
-  bool OnTitlebarMouseDragged(const gfx::Point& location);
+  // |mouse_location| is in screen coordinates.
+  bool OnTitlebarMousePressed(const gfx::Point& mouse_location);
+  bool OnTitlebarMouseDragged(const gfx::Point& mouse_location);
   bool OnTitlebarMouseReleased();
   bool OnTitlebarMouseCaptureLost();
 
@@ -121,6 +122,7 @@ class PanelBrowserView : public BrowserView,
   virtual gfx::Size IconOnlySize() const OVERRIDE;
   virtual void EnsurePanelFullyVisible() OVERRIDE;
   virtual void SetPanelAppIconVisibility(bool visible) OVERRIDE;
+  virtual void SetPanelAlwaysOnTop(bool on_top) OVERRIDE;
 
   // Overridden from AnimationDelegate:
   virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;