[Mac] Remove kPulseBookmarkButtonNotification.

chrome/browser/ui/cocoa/bookmarks/bookmark_button.h

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_button.h
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_button.h b/chrome/browser/ui/cocoa/bookmarks/bookmark_button.h
index 90af2ad19fb93d781acc52127c3c2aa2230e9361..25d73b0d2b6cd781083959cc163595ddf7ca58b6 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_button.h
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_button.h
@@ -252,17 +252,3 @@ class BookmarkNode;
 - (void)beginDrag:(NSEvent*)event;
 @end
 
-namespace bookmark_button {
-
-// Notifications for pulsing of bookmarks.
-extern NSString* const kPulseBookmarkButtonNotification;
-
-// Key for userInfo dict of a kPulseBookmarkButtonNotification.
-// Value is a [NSValue valueWithPointer:]; pointer is a (const BookmarkNode*).
-extern NSString* const kBookmarkKey;
-
-// Key for userInfo dict of a kPulseBookmarkButtonNotification.
-// Value is a [NSNumber numberWithBool:] to turn pulsing on or off.
-extern NSString* const kBookmarkPulseFlagKey;
-
-};