Refactor intra-strip panel drags by introducing PanelDragController.

chrome/browser/ui/panels/panel_window_controller_cocoa.mm

Index: chrome/browser/ui/panels/panel_window_controller_cocoa.mm
diff --git a/chrome/browser/ui/panels/panel_window_controller_cocoa.mm b/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
index 87f4f6d535c3a30d7daa441857d4f15e58241606..0b8188a99935967d6c1204d8a7f052fc2ccf2899 100644
--- a/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
+++ b/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
@@ -399,7 +399,7 @@ enum {
 }
 
 - (BOOL)isDraggable {
-  return windowShim_->panel()->draggable();
+  return windowShim_->panel()->manager()->CanDrag(windowShim_->panel());

[jennb, 2012/02/17 21:28:45]

Wow, this looks ugly. We should leave draggable() on Panel class and have it
simply call panel_strip_->CanDrag(this). Get rid of CanDrag from panelmanager
class, too.

[jianli, 2012/02/17 23:52:56]

Done.

 }
 
 - (void)startDrag {
@@ -412,8 +412,9 @@ enum {
   windowShim_->panel()->manager()->EndDragging(cancelled);
 }
 
-- (void)dragWithDeltaX:(int)deltaX {
-  windowShim_->panel()->manager()->Drag(deltaX);
+- (void)dragWithDeltaX:(int)deltaX
+                deltaY:(int)deltaY {
+  windowShim_->panel()->manager()->Drag(deltaX, deltaY);
 }
 
 - (void)setPanelFrame:(NSRect)frame