Add Intel DRM backed GpuMemoryBuffer implementation.

ui/gl/gl_image_x11.cc

Index: ui/gl/gl_image_x11.cc
diff --git a/ui/gl/gl_image_x11.cc b/ui/gl/gl_image_x11.cc
index 6f7d8c6e85b3c735d07c1d0feccbee89d5c458be..8a85096d9eabbf7075b246a32bc88045643bca1f 100644
--- a/ui/gl/gl_image_x11.cc
+++ b/ui/gl/gl_image_x11.cc
@@ -6,6 +6,7 @@
 
 #include "base/debug/trace_event.h"
 #include "ui/gl/gl_image_glx.h"
+#include "ui/gl/gl_image_linux_dma_buffer.h"
 #include "ui/gl/gl_image_shm.h"
 #include "ui/gl/gl_image_stub.h"
 #include "ui/gl/gl_implementation.h"
@@ -52,6 +53,14 @@ scoped_refptr<GLImage> GLImage::CreateGLImageForGpuMemoryBuffer(
 
           return image;
         }
+        case INTEL_DRM_BUFFER: {
+          scoped_refptr<GLImageLinuxDMABuffer> image(
+              new GLImageLinuxDMABuffer(size, internalformat));
+          if (!image->Initialize(buffer))
+            return NULL;
+
+          return image;
+        }
         default:
           NOTREACHED();
           return NULL;