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

ui/accelerated_widget_mac/surface_handle_types.cc

Index: ui/accelerated_widget_mac/surface_handle_types.cc
diff --git a/ui/accelerated_widget_mac/surface_handle_types.cc b/ui/accelerated_widget_mac/surface_handle_types.cc
deleted file mode 100644
index 356996299f43fc069333e90250df84b1f8be10d4..0000000000000000000000000000000000000000
--- a/ui/accelerated_widget_mac/surface_handle_types.cc
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2014 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 "ui/accelerated_widget_mac/surface_handle_types.h"
-
-#include "base/logging.h"
-
-namespace ui {
-namespace {
-
-// The type of the handle is stored in the upper 64 bits.
-const uint64_t kTypeMask = 0xFFFFFFFFull << 32;
-
-const uint64_t kTypeIOSurface = 0x01010101ull << 32;
-const uint64_t kTypeCAContext = 0x02020202ull << 32;
-
-// To make it a bit less likely that we'll just cast off the top bits of the
-// handle to get the ID, XOR lower bits with a type-specific mask.
-const uint32_t kXORMaskIOSurface = 0x01010101;
-const uint32_t kXORMaskCAContext = 0x02020202;
-
-}  // namespace
-
-SurfaceHandleType GetSurfaceHandleType(uint64_t surface_handle) {
-  switch(surface_handle & kTypeMask) {
-    case kTypeIOSurface:
-      return kSurfaceHandleTypeIOSurface;
-    case kTypeCAContext:
-      return kSurfaceHandleTypeCAContext;
-  }
-  return kSurfaceHandleTypeInvalid;
-}
-
-IOSurfaceID IOSurfaceIDFromSurfaceHandle(uint64_t surface_handle) {
-  DCHECK_EQ(kSurfaceHandleTypeIOSurface, GetSurfaceHandleType(surface_handle));
-  return static_cast<uint32_t>(surface_handle) ^ kXORMaskIOSurface;
-}
-
-CAContextID CAContextIDFromSurfaceHandle(uint64_t surface_handle) {
-  DCHECK_EQ(kSurfaceHandleTypeCAContext, GetSurfaceHandleType(surface_handle));
-  return static_cast<uint32_t>(surface_handle) ^ kXORMaskCAContext;
-}
-
-uint64_t SurfaceHandleFromIOSurfaceID(IOSurfaceID io_surface_id) {
-  return kTypeIOSurface | (io_surface_id ^ kXORMaskIOSurface);
-}
-
-uint64_t SurfaceHandleFromCAContextID(CAContextID ca_context_id) {
-  return kTypeCAContext | (ca_context_id ^ kXORMaskCAContext);
-}
-
-}  //  namespace ui