Updated OMX decoder for recent PPAPI changes, and added to the build.

content/common/gpu/gpu_video_decode_accelerator.h

Index: content/common/gpu/gpu_video_decode_accelerator.h
diff --git a/content/common/gpu/gpu_video_decode_accelerator.h b/content/common/gpu/gpu_video_decode_accelerator.h
index 584e3dee03c2f3aed5adb1d1338069cfa6ede2dc..318dabc60f8e2d9480c2f40379b1418d267dfe49 100644
--- a/content/common/gpu/gpu_video_decode_accelerator.h
+++ b/content/common/gpu/gpu_video_decode_accelerator.h
@@ -45,7 +45,8 @@ class GpuVideoDecodeAccelerator
 
   void set_video_decode_accelerator(
       media::VideoDecodeAccelerator* accelerator) {
-    video_decode_accelerator_ = accelerator;
+    DCHECK(!video_decode_accelerator_.get());
+    video_decode_accelerator_.reset(accelerator);
   }
 
  private:
@@ -72,7 +73,7 @@ class GpuVideoDecodeAccelerator
   int32 route_id_;
 
   // Pointer to the underlying VideoDecodeAccelerator.
-  media::VideoDecodeAccelerator* video_decode_accelerator_;
+  scoped_ptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
 };