Disable CoreAnimation by default

content/browser/renderer_host/compositing_iosurface_context_mac.mm

 // Copyright (c) 2013 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 "content/browser/renderer_host/compositing_iosurface_context_mac.h"
 
 #include <OpenGL/gl.h>
 #include <OpenGL/OpenGL.h>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "content/browser/renderer_host/compositing_iosurface_shader_programs_mac.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/gl/gpu_switching_manager.h"
 
 namespace content {
 
 CoreAnimationStatus GetCoreAnimationStatus() {
   static CoreAnimationStatus status =
-      CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableCoreAnimation) ?
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableCoreAnimation) ?
               CORE_ANIMATION_DISABLED : CORE_ANIMATION_ENABLED;
   return status;
 }
 
 // static
 scoped_refptr<CompositingIOSurfaceContext>
 CompositingIOSurfaceContext::Get(int window_number) {
   TRACE_EVENT0("browser", "CompositingIOSurfaceContext::Get");
 
   // Return the context for this window_number, if it exists.
@@ skipping 190 matching lines @@
 CompositingIOSurfaceContext::WindowMap*
     CompositingIOSurfaceContext::window_map() {
   return window_map_.Pointer();
 }
 
 // static
 base::LazyInstance<CompositingIOSurfaceContext::WindowMap>
     CompositingIOSurfaceContext::window_map_;
 
 }  // namespace content