content: Move IOSurface backed GpuMemoryBuffer allocation to GPU process.

content/common/gpu/client/gpu_memory_buffer_impl_mac.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_mac.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_mac.cc b/content/common/gpu/client/gpu_memory_buffer_impl_mac.cc
index ee701bd5be566034b65506edcedb4fbd61de8fc0..489ddd9015e2a255048297f5594d789c7181a1af 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_mac.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_mac.cc
@@ -15,6 +15,13 @@ void GpuMemoryBufferImpl::Create(const gfx::Size& size,
                                  unsigned usage,
                                  int client_id,
                                  const CreationCallback& callback) {
+  if (GpuMemoryBufferImplIOSurface::IsConfigurationSupported(internalformat,
+                                                             usage)) {
+    GpuMemoryBufferImplIOSurface::Create(
+        size, internalformat, usage, client_id, callback);
+    return;
+  }
+
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, internalformat, usage)) {
     GpuMemoryBufferImplSharedMemory::Create(
@@ -33,6 +40,13 @@ void GpuMemoryBufferImpl::AllocateForChildProcess(
     base::ProcessHandle child_process,
     int child_client_id,
     const AllocationCallback& callback) {
+  if (GpuMemoryBufferImplIOSurface::IsConfigurationSupported(internalformat,
+                                                             usage)) {
+    GpuMemoryBufferImplIOSurface::AllocateForChildProcess(
+        size, internalformat, usage, child_client_id, callback);
+    return;
+  }
+
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, internalformat, usage)) {
     GpuMemoryBufferImplSharedMemory::AllocateForChildProcess(