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..a46d02eb47b985a7512589ab2a2676ef2ebd9955 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"
@@ -40,9 +41,22 @@ scoped_refptr<GLImage> GLImage::CreateGLImageForGpuMemoryBuffer(
     unsigned internalformat) {
   TRACE_EVENT0("gpu", "GLImage::CreateGLImageForGpuMemoryBuffer");
   switch (GetGLImplementation()) {
+    case kGLImplementationEGLGLES2:
+      switch (buffer.type) {
+        case INTEL_DRM_BUFFER: {
+          scoped_refptr<GLImageLinuxDMABuffer> image(
+              new GLImageLinuxDMABuffer(size, internalformat));
+          if (!image->Initialize(buffer))
+            return NULL;
+
+          return image;
+        }
+        default:
+          break;
+      }
+    // Fall-through.
     case kGLImplementationOSMesaGL:
     case kGLImplementationDesktopGL:
-    case kGLImplementationEGLGLES2:
       switch (buffer.type) {
         case SHARED_MEMORY_BUFFER: {
           scoped_refptr<GLImageShm> image(