gpu: Add IOSurface backed GpuMemoryBuffer implementation.

content/common/child_process_host_impl.cc

 // 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 "content/common/child_process_host_impl.h"
 
 #include <limits>
 
 #include "base/atomicops.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process/process_metrics.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "content/common/child_process_messages.h"
+#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 #include "content/public/common/child_process_host_delegate.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_logging.h"
 
 #if defined(OS_LINUX)
 #include "base/linux_util.h"
 #elif defined(OS_WIN)
 #include "content/common/font_cache_dispatcher_win.h"
@@ skipping 259 matching lines @@
     base::SharedMemoryHandle* handle) {
   AllocateSharedMemory(buffer_size, peer_handle_, handle);
 }
 
 void ChildProcessHostImpl::OnShutdownRequest() {
   if (delegate_->CanShutdown())
     Send(new ChildProcessMsg_Shutdown());
 }
 
 void ChildProcessHostImpl::OnAllocateGpuMemoryBuffer(
-    uint32 buffer_size,
+    uint32 width,
+    uint32 height,
+    uint32 internalformat,
     gfx::GpuMemoryBufferHandle* handle) {
   handle->type = gfx::SHARED_MEMORY_BUFFER;
-  AllocateSharedMemory(buffer_size, peer_handle_, &handle->handle);
+  AllocateSharedMemory(
+      width * height * GpuMemoryBufferImpl::BytesPerPixel(internalformat),
+      peer_handle_,
+      &handle->handle);
 }
 
 }  // namespace content