Fix OSX 10.12 compilation errors in chrome/browser/ui.

chrome/browser/ui/cocoa/info_bubble_window.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
 
 #include <Carbon/Carbon.h>
 
 #include "base/logging.h"
 #import "base/mac/foundation_util.h"
 #import "base/mac/scoped_nsobject.h"
+#import "base/mac/sdk_forward_declarations.h"
 #include "base/macros.h"
 #include "chrome/browser/chrome_notification_types.h"
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSAnimation+Duration.h"
 
 namespace {
 const CGFloat kOrderInSlideOffset = 10;
@@ skipping 39 matching lines @@
   // Used for registering to receive notifications and automatic clean up.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(AppNotificationBridge);
 };
 
 // A delegate object for watching the alphaValue animation on InfoBubbleWindows.
 // An InfoBubbleWindow instance cannot be the delegate for its own animation
 // because CAAnimations retain their delegates, and since the InfoBubbleWindow
 // retains its animations a retain loop would be formed.
-@interface InfoBubbleWindowCloser : NSObject {
+@interface InfoBubbleWindowCloser : NSObject <CAAnimationDelegate> {
  @private
   InfoBubbleWindow* window_;  // Weak. Window to close.
 }
 - (id)initWithWindow:(InfoBubbleWindow*)window;
 @end
 
 @implementation InfoBubbleWindowCloser
 
 - (id)initWithWindow:(InfoBubbleWindow*)window {
   if ((self = [super init])) {
     window_ = window;
   }
   return self;
 }
 
+- (void)animationDidStart:(CAAnimation*)theAnimation {
+  // CAAnimationDelegate method added on OSX 10.12.
+}
+
 // Callback for the alpha animation. Closes window_ if appropriate.
 - (void)animationDidStop:(CAAnimation*)anim finished:(BOOL)flag {
   // When alpha reaches zero, close window_.
   if ([window_ alphaValue] == 0.0) {
     [window_ finishCloseAfterAnimation];
   }
 }
 
 @end
 
@@ skipping 157 matching lines @@
 
 // Override -[NSWindow addChildWindow] to prevent ShareKit bugs propagating
 // to the browser window. See http://crbug.com/475855.
 - (void)addChildWindow:(NSWindow*)childWindow
                ordered:(NSWindowOrderingMode)orderingMode {
   [[self parentWindow] removeChildWindow:self];
   [super addChildWindow:childWindow ordered:orderingMode];
 }
 
 @end