[Mac] Make ExtensionPopupController is-a BaseBubbleController to unify code.

chrome/browser/ui/cocoa/extensions/extension_popup_controller.h

Index: chrome/browser/ui/cocoa/extensions/extension_popup_controller.h
diff --git a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.h b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.h
index 02ac2da2ecf32dfdf18b09107a9b5948c70e68e2..6909df5c8a8be11dd3787762bb6cc9a5b030890c 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.h
+++ b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.h
@@ -11,7 +11,8 @@
 #import "base/mac/cocoa_protocols.h"
 #import "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/cocoa/info_bubble_view.h"
+#import "chrome/browser/ui/cocoa/base_bubble_controller.h"
+#import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #include "googleurl/src/gurl.h"
 
 
@@ -19,7 +20,6 @@ class Browser;
 class DevtoolsNotificationBridge;
 class ExtensionHost;
 class ExtensionPopupContainer;
-@class InfoBubbleWindow;
 
 namespace content {
 class NotificationRegistrar;
@@ -32,18 +32,11 @@ class NotificationRegistrar;
 //
 // There can only be one browser action popup open at a time, so a static
 // variable holds a reference to the current popup.
-@interface ExtensionPopupController : NSWindowController<NSWindowDelegate> {
+@interface ExtensionPopupController : BaseBubbleController {
  @private
   // The native extension view retrieved from the extension host. Weak.
   NSView* extensionView_;
 
-  // The popup's parent window. Weak.
-  NSWindow* parentWindow_;
-
-  // Where the window is anchored. Right now it's the bottom center of the
-  // browser action button.
-  NSPoint anchor_;
-
   // The current frame of the extension view. Cached to prevent setting the
   // frame if the size hasn't changed.
   NSRect extensionFrame_;