Disable CoreAnimation by default

chrome/browser/ui/cocoa/nsview_additions.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.
 
 #include "base/command_line.h"
 #include "base/mac/mac_util.h"
 #import "chrome/browser/ui/cocoa/nsview_additions.h"
 #include "chrome/common/chrome_switches.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
@@ skipping 73 matching lines @@
       colorWithAlphaComponent:0.5 / [self cr_lineWidth]];
 }
 
 - (void)cr_recursivelySetNeedsDisplay:(BOOL)flag {
   [self setNeedsDisplay:YES];
   for (NSView* child in [self subviews])
     [child cr_recursivelySetNeedsDisplay:flag];
 }
 
 - (void)cr_setWantsLayer:(BOOL)wantsLayer {
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableCoreAnimation))
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableCoreAnimation))
     return;
 
   // Dynamically removing layers on SnowLeopard will sometimes result in
   // crashes. Once a view has a layer on SnowLeopard, it is stuck with it.
   // http://crbug.com/348328
   if (!wantsLayer && base::mac::IsOSSnowLeopard())
     return;
 
   [self setWantsLayer:wantsLayer];
 }
@@ skipping 23 matching lines @@
 }
 
 - (NSView*)cr_viewBeingDrawnTo {
   if (!g_ancestorBeingDrawnFrom)
     return self;
   DCHECK(g_ancestorBeingDrawnFrom == self);
   return g_childBeingDrawnTo;
 }
 
 @end