Made full screen video with DevTools not flash black on Android.

content/common/gpu/media/android_video_decode_accelerator.cc

Index: content/common/gpu/media/android_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/android_video_decode_accelerator.cc b/content/common/gpu/media/android_video_decode_accelerator.cc
index 05952cb1e431bf4ef0ec156c33d9240f49e1fe82..39ca6ff96b42da52634155152773119d5456582c 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.cc
+++ b/content/common/gpu/media/android_video_decode_accelerator.cc
@@ -808,6 +808,8 @@ void AndroidVideoDecodeAccelerator::AssignPictureBuffers(
     return;
   }
 
+  bool have_context = make_context_current_.Run();
+
   for (size_t i = 0; i < buffers.size(); ++i) {
     if (buffers[i].size() != size_) {
       POST_ERROR(INVALID_ARGUMENT,
@@ -824,7 +826,7 @@ void AndroidVideoDecodeAccelerator::AssignPictureBuffers(
     // about "zombies" for why we maintain this set in the first place.
     dismissed_picture_ids_.erase(id);
 
-    strategy_->AssignOnePictureBuffer(buffers[i]);
+    strategy_->AssignOnePictureBuffer(buffers[i], have_context);
   }
   TRACE_COUNTER1("media", "AVDA::FreePictureIds", free_picture_ids_.size());