Add Intel DRM backed GpuMemoryBuffer implementation.

content/browser/gpu/browser_gpu_channel_host_factory.cc

Index: content/browser/gpu/browser_gpu_channel_host_factory.cc
diff --git a/content/browser/gpu/browser_gpu_channel_host_factory.cc b/content/browser/gpu/browser_gpu_channel_host_factory.cc
index 55d59dfc4fcc5663d5983ac6773568badd883ea6..23bf0783e8fbab873e1b73491a10d6d5c9768580 100644
--- a/content/browser/gpu/browser_gpu_channel_host_factory.cc
+++ b/content/browser/gpu/browser_gpu_channel_host_factory.cc
@@ -18,6 +18,10 @@
 #include "content/public/common/content_client.h"
 #include "ipc/ipc_forwarding_message_filter.h"
 
+#if defined(OS_LINUX)
+#include "content/common/gpu/client/gpu_memory_buffer_impl_intel_drm.h"
+#endif
+
 namespace content {
 
 BrowserGpuChannelHostFactory* BrowserGpuChannelHostFactory::instance_ = NULL;
@@ -382,6 +386,21 @@ scoped_ptr<gfx::GpuMemoryBuffer>
   if (!GpuMemoryBufferImpl::IsFormatValid(internalformat))
     return scoped_ptr<gfx::GpuMemoryBuffer>();
 
+#if defined(OS_LINUX)
+  if (GpuMemoryBufferImplIntelDRM::IsFormatSupported(internalformat)) {
+    drm_intel_bo* buffer_object =
+        GpuMemoryBufferImplIntelDRM::CreateBufferObject(
+            gfx::Size(width, height), internalformat);
+    if (buffer_object) {
+      scoped_ptr<GpuMemoryBufferImplIntelDRM> buffer(
+          new GpuMemoryBufferImplIntelDRM(gfx::Size(width, height),
+                                          internalformat));
+      if (buffer->InitializeFromBufferObject(buffer_object))
+        return buffer.PassAs<gfx::GpuMemoryBuffer>();
+    }
+  }
+#endif
+
   size_t size = width * height *
       GpuMemoryBufferImpl::BytesPerPixel(internalformat);
   scoped_ptr<base::SharedMemory> shm(new base::SharedMemory());