Mac: Audio indicator in each tab

chrome/browser/ui/cocoa/tabs/throbbing_image_view.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/tabs/throbbing_image_view.h"
 
 #include "ui/base/animation/animation_delegate.h"
 
 class ThrobbingImageViewAnimationDelegate : public ui::AnimationDelegate {
  public:
@@ skipping 16 matching lines @@
     throbImage_.reset([throbImage retain]);
 
     delegate_.reset(new ThrobbingImageViewAnimationDelegate(self));
     throbAnimation_.reset(new ui::ThrobAnimation(delegate_.get()));
     throbAnimation_->SetThrobDuration(durationMS);
     throbAnimation_->StartThrobbing(-1);
   }
   return self;
 }
 
+- (void)setTweenType:(ui::Tween::Type)type {
+  throbAnimation_->SetTweenType(type);
+}
+
 - (void)dealloc {
   throbAnimation_->Stop();
   [super dealloc];
 }
 
 - (void)drawRect:(NSRect)rect {
   [backgroundImage_ drawInRect:[self bounds]
                       fromRect:NSZeroRect
                      operation:NSCompositeSourceOver
                       fraction:1];
   [throbImage_ drawInRect:[self bounds]
                  fromRect:NSZeroRect
                 operation:NSCompositeSourceOver
                  fraction:throbAnimation_->GetCurrentValue()];
 }
 
 @end