content: Add command line flag for native GPU memory buffers.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index ccf3d722432f255d9e27be197e0d7b846ccc1022..2764d92a50ac49463a37c51284276c91a0c8d05a 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -105,6 +105,7 @@
 #include "content/common/child_process_host_impl.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/content_switches_internal.h"
+#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/mojo/mojo_messages.h"
 #include "content/common/resource_messages.h"
@@ -1021,6 +1022,10 @@ static void AppendCompositorCommandLineFlags(base::CommandLine* command_line) {
   if (IsForceGpuRasterizationEnabled())
     command_line->AppendSwitch(switches::kForceGpuRasterization);
 
+  // Surface texture backed GPU memory buffers require TEXTURE_EXTERNAL_OES.
+  if (GpuMemoryBufferImpl::GetPreferredType() == gfx::SURFACE_TEXTURE_BUFFER)
+    command_line->AppendSwitch(switches::kUseImageExternal);
+
   // Appending disable-gpu-feature switches due to software rendering list.
   GpuDataManagerImpl* gpu_data_manager = GpuDataManagerImpl::GetInstance();
   DCHECK(gpu_data_manager);