fix for 27454 - Fade out close button state on mouse exit

chrome/browser/ui/cocoa/tabpose_window.mm

 // Copyright (c) 2011 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/tabpose_window.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include <algorithm>
 
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_callback_factory.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_tab_helper.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 #include "chrome/browser/tab_contents/thumbnail_generator.h"
 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
+#include "chrome/browser/ui/cocoa/animation_utils.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_constants.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/infobars/infobar_container_controller.h"
 #import "chrome/browser/ui/cocoa/tab_contents/favicon_util.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_model_observer_bridge.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/pref_names.h"
 #import "content/browser/debugger/devtools_window.h"
 #include "content/browser/renderer_host/backing_store_mac.h"
@@ skipping 311 matching lines @@
   } else if (thumbnail_) {
     // No cache hit, but the renderer returned a thumbnail to us.
     gfx::ScopedCGContextSaveGState CGContextSaveGState(context);
     CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
     CGContextDrawImage(context, destRect, thumbnail_.get());
   }
 }
 
 @end
 
-namespace {
-
-class ScopedCAActionDisabler {
- public:
-  ScopedCAActionDisabler() {
-    [CATransaction begin];
-    [CATransaction setValue:[NSNumber numberWithBool:YES]
-                     forKey:kCATransactionDisableActions];
-  }
-
-  ~ScopedCAActionDisabler() {
-    [CATransaction commit];
-  }
-};
-
-class ScopedCAActionSetDuration {
- public:
-  explicit ScopedCAActionSetDuration(CGFloat duration) {
-    [CATransaction begin];
-    [CATransaction setValue:[NSNumber numberWithFloat:duration]
-                     forKey:kCATransactionAnimationDuration];
-  }
-
-  ~ScopedCAActionSetDuration() {
-    [CATransaction commit];
-  }
-};
-
-}  // namespace
-
 // Given the number |n| of tiles with a desired aspect ratio of |a| and a
 // desired distance |dx|, |dy| between tiles, returns how many tiles fit
 // vertically into a rectangle with the dimensions |w_c|, |h_c|. This returns
 // an exact solution, which is usually a fractional number.
 static float FitNRectsWithAspectIntoBoundingSizeWithConstantPadding(
     int n, double a, int w_c, int h_c, int dx, int dy) {
   // We want to have the small rects have the same aspect ratio a as a full
   // tab. Let w, h be the size of a small rect, and w_c, h_c the size of the
   // container. dx, dy are the distances between small rects in x, y direction.
 
@@ skipping 1308 matching lines @@
   tile.set_tab_contents(contents);
   ThumbnailLayer* thumbLayer = [allThumbnailLayers_ objectAtIndex:index];
   [thumbLayer setTabContents:contents];
 }
 
 - (void)tabStripModelDeleted {
   [self close];
 }
 
 @end