Android: Always update SurfaceTexture when used for draw

content/common/gpu/stream_texture_android.h

Index: content/common/gpu/stream_texture_android.h
diff --git a/content/common/gpu/stream_texture_android.h b/content/common/gpu/stream_texture_android.h
index 50ab567d737130eed2fe9d7b7fa8b0a2b6e82c52..746ad59286cbbcf2923894a08bda0e655814857f 100644
--- a/content/common/gpu/stream_texture_android.h
+++ b/content/common/gpu/stream_texture_android.h
@@ -59,8 +59,11 @@ class StreamTexture : public gfx::GLImage,
   // Current size of the surface texture.
   gfx::Size size_;
 
-  // Whether the surface texture has been updated.
-  bool has_updated_;
+  // Whether we ever bound a valid frame.
+  bool has_valid_frame_;
+
+  // Whether a new frame is available that we should update to.
+  bool has_pending_frame_;
 
   GpuCommandBufferStub* owner_stub_;
   int32 route_id_;