Fix for flash fullscreen animations on OSX

chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.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/tab_contents/tab_contents_controller.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 56 matching lines @@
   TabContentsController* const controller_;
 
   DISALLOW_COPY_AND_ASSIGN(FullscreenObserver);
 };
 
 @interface TabContentsController (TabContentsContainerViewDelegate)
 - (BOOL)contentsInFullscreenCaptureMode;
 // Computes and returns the frame to use for the contents view within the
 // container view.
 - (NSRect)frameForContentsView;
+
+// Returns YES if the content view should be resized.
+- (BOOL)shouldResizeContentView;
 @end
 
 // An NSView with special-case handling for when the contents view does not
 // expand to fill the entire tab contents area. See 'AutoEmbedFullscreen mode'
 // in header file comments.
 @interface TabContentsContainerView : NSView {
  @private
   TabContentsController* delegate_;  // weak
 }
 
@@ skipping 42 matching lines @@
     return backgroundColor;
   }
 }
 
 // Override auto-resizing logic to query the delegate for the exact frame to
 // use for the contents view.
 - (void)resizeSubviewsWithOldSize:(NSSize)oldBoundsSize {
   NSView* const contentsView =
       [[self subviews] count] > 0 ? [[self subviews] objectAtIndex:0] : nil;
   if (!contentsView || [contentsView autoresizingMask] == NSViewNotSizable ||
-      !delegate_) {
+      !delegate_ || ![delegate_ shouldResizeContentView]) {
     return;
   }
 
   ScopedCAActionDisabler disabler;
   [contentsView setFrame:[delegate_ frameForContentsView]];
 }
 
 // Update the background layer's color whenever the view needs to repaint.
 - (void)setNeedsDisplayInRect:(NSRect)rect {
   [super setNeedsDisplayInRect:rect];
@@ skipping 74 matching lines @@
   NSView* contentsNativeView;
   content::RenderWidgetHostView* const fullscreenView =
       isEmbeddingFullscreenWidget_ ?
       contents_->GetFullscreenRenderWidgetHostView() : NULL;
   if (fullscreenView) {
     contentsNativeView = fullscreenView->GetNativeView();
   } else {
     isEmbeddingFullscreenWidget_ = NO;
     contentsNativeView = contents_->GetNativeView();
   }
-  if (!isEmbeddingFullscreenWidget_ || !blockFullscreenResize_)
+
+  if ([self shouldResizeContentView])
     [contentsNativeView setFrame:[self frameForContentsView]];
 
   if ([subviews count] == 0) {
     [contentsContainer addSubview:contentsNativeView];
   } else if ([subviews objectAtIndex:0] != contentsNativeView) {
     [contentsContainer replaceSubview:[subviews objectAtIndex:0]
                                  with:contentsNativeView];
   }
   [contentsNativeView setAutoresizingMask:NSViewWidthSizable|
                                           NSViewHeightSizable];
@@ skipping 118 matching lines @@
           rect.width(), static_cast<int>(y / captureSize.width())));
     } else {
       rect.ClampToCenteredSize(gfx::Size(
           static_cast<int>(x / captureSize.height()), rect.height()));
     }
   }
 
   return NSRectFromCGRect(rect.ToCGRect());
 }
 
+- (BOOL)shouldResizeContentView {
+  return !isEmbeddingFullscreenWidget_ || !blockFullscreenResize_;
+}
+
 @end