1 files changed, 7 insertions, 3 deletions
diff --git a/chrome/browser/cocoa/extension_installed_bubble_controller.h b/chrome/browser/cocoa/extension_installed_bubble_controller.h
index de2998a..e5f50a3 100644
--- a/chrome/browser/cocoa/extension_installed_bubble_controller.h
+++ b/chrome/browser/cocoa/extension_installed_bubble_controller.h
@@ -47,7 +47,7 @@ typedef enum {
     NSWindowController<NSWindowDelegate> {
  @private
   NSWindow* parentWindow_;  // weak
-  Extension* extension_;  // weak
+  const Extension* extension_;  // weak
   Browser* browser_;  // weak
   scoped_nsobject<NSImage> icon_;
 
@@ -72,13 +72,13 @@ typedef enum {
   IBOutlet NSTextField* extensionInstalledInfoMsg_;
 }
 
-@property (nonatomic, readonly) Extension* extension;
+@property (nonatomic, readonly) const Extension* extension;
 @property (nonatomic) BOOL pageActionRemoved;
 
 // Initialize the window, and then create observers to wait for the extension
 // to complete loading, or the browser window to close.
 - (id)initWithParentWindow:(NSWindow*)parentWindow
-                 extension:(Extension*)extension
+                 extension:(const Extension*)extension
                    browser:(Browser*)browser
                       icon:(SkBitmap)icon;
 
@@ -89,6 +89,10 @@ typedef enum {
 // the extensionObserver when the extension has completed loading.
 - (void)showWindow:(id)sender;
 
+// Clears our weak pointer to the Extension. This callback is triggered by
+// the extensionObserver when the extension is unloaded.
+- (void)extensionUnloaded:(id)sender;
+
 @end
 
 @interface ExtensionInstalledBubbleController(ExposedForTesting)