[Mac] Prep for animating the Browser Action Buttons in and out....

chrome/browser/cocoa/extensions/browser_actions_container_view.mm

 // Copyright (c) 2010 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/cocoa/extensions/browser_actions_container_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #import "base/scoped_nsobject.h"
@@ skipping 147 matching lines @@
 
 #pragma mark -
 #pragma mark Public Methods
 
 - (void)resizeToWidth:(CGFloat)width animate:(BOOL)animate {
   width = std::max(width, kMinimumContainerWidth);
   NSRect frame = [self frame];
   lastXPos_ = frame.origin.x;
   CGFloat dX = frame.size.width - width;
   frame.size.width = width;
-  NSRect newFrame = NSOffsetRect(frame, dX, 0);
+  animationEndFrame_ = NSOffsetRect(frame, dX, 0);
   if (animate) {
     [NSAnimationContext beginGrouping];
     [[NSAnimationContext currentContext] setDuration:kAnimationDuration];
-    [[self animator] setFrame:newFrame];
+    [[self animator] setFrame:animationEndFrame_];
     [NSAnimationContext endGrouping];
-    animationEndFrame_ = newFrame;
   } else {
-    [self setFrame:newFrame];
+    [self setFrame:animationEndFrame_];
     [self setNeedsDisplay:YES];
   }
 }
 
 - (CGFloat)resizeDeltaX {
   return [self frame].origin.x - lastXPos_;
 }
 
 #pragma mark -
 #pragma mark Private Methods
@@ skipping 29 matching lines @@
   [[NSColor colorWithCalibratedWhite:0.7 alpha:0.5] set];
   grippyRect.origin.x += 1.0;
   NSRectFill(grippyRect);
 
   [[NSColor colorWithCalibratedWhite:1.0 alpha:1.0] set];
   grippyRect.origin.x += 1.0;
   NSRectFill(grippyRect);
 }
 
 @end