Replace IOSurfaceManager by directly passing IOSurface Mach ports over Chrome IPC.

ui/gfx/mac/io_surface.cc

Index: ui/gfx/mac/io_surface.cc
diff --git a/ui/gfx/mac/io_surface_manager.cc b/ui/gfx/mac/io_surface.cc
similarity index 89%
rename from ui/gfx/mac/io_surface_manager.cc
rename to ui/gfx/mac/io_surface.cc
index 580196eee77b607b8e5d6edf3a74f9aae2f9c663..7d9767f2b593fca62228a234205e6b527c656673 100644
--- a/ui/gfx/mac/io_surface_manager.cc
+++ b/ui/gfx/mac/io_surface.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/gfx/mac/io_surface_manager.h"
+#include "ui/gfx/mac/io_surface.h"
 
 #include <IOSurface/IOSurface.h>
 
@@ -13,8 +13,6 @@
 namespace gfx {
 namespace {
 
-IOSurfaceManager* g_instance = NULL;
-
 void AddIntegerValue(CFMutableDictionaryRef dictionary,
                      const CFStringRef key,
                      int32 value) {
@@ -86,21 +84,7 @@ int32 PixelFormat(gfx::BufferFormat format) {
 
 }  // namespace
 
-// static
-IOSurfaceManager* IOSurfaceManager::GetInstance() {
-  DCHECK(g_instance);
-  return g_instance;
-}
-
-// static
-void IOSurfaceManager::SetInstance(IOSurfaceManager* instance) {
-  DCHECK(!g_instance || !instance);
-  g_instance = instance;
-}
-
-// static
-IOSurfaceRef IOSurfaceManager::CreateIOSurface(const gfx::Size& size,
-                                               gfx::BufferFormat format) {
+IOSurfaceRef CreateIOSurface(const gfx::Size& size, gfx::BufferFormat format) {
   size_t num_planes = gfx::NumberOfPlanesForBufferFormat(format);
   base::ScopedCFTypeRef<CFMutableArrayRef> planes(CFArrayCreateMutable(
       kCFAllocatorDefault, num_planes, &kCFTypeArrayCallBacks));