Add support for slowing down all animations on the Mac by using the shift and/or

control key.

BUG=27274
TEST= 1) create a window. 
      2) Create a tab. 
      3) Hold down the shift key and click in the close button on the tab.
      4) Watch animation proceed slowly. (and slower if you hold down shift + control)
      This should apply to all non-web page animations.
      
Review URL: http://codereview.chromium.org/388004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31588 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 2 deletions

diff --git a/chrome/browser/cocoa/tab_strip_controller.mm b/chrome/browser/cocoa/tab_strip_controller.mm
index dcc25ea..72f3324 100644
--- a/chrome/browser/cocoa/tab_strip_controller.mm
+++ b/chrome/browser/cocoa/tab_strip_controller.mm
@@ -36,6 +36,7 @@
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "skia/ext/skia_utils_mac.h"
+#import "third_party/GTM/AppKit/GTMNSAnimation+Duration.h"
 
 NSString* const kTabStripNumberOfTabsChanged = @"kTabStripNumberOfTabsChanged";
 
@@ -546,7 +547,7 @@ static const NSTimeInterval kAnimationDuration = 0.2;
 
   NSRect enclosingRect = NSZeroRect;
   [NSAnimationContext beginGrouping];
-  [[NSAnimationContext currentContext] setDuration:kAnimationDuration];
+  [[NSAnimationContext currentContext] gtm_setDuration:kAnimationDuration];
 
   // Update the current subviews and their z-order if requested.
   if (doUpdate)
@@ -912,7 +913,7 @@ static const NSTimeInterval kAnimationDuration = 0.2;
   NSRect newFrame = [tabView frame];
   newFrame = NSOffsetRect(newFrame, 0, -newFrame.size.height);
   [NSAnimationContext beginGrouping];
-  [[NSAnimationContext currentContext] setDuration:kAnimationDuration];
+  [[NSAnimationContext currentContext] gtm_setDuration:kAnimationDuration];
   [[tabView animator] setFrame:newFrame];
   [NSAnimationContext endGrouping];
 }