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 d058451b38bf5b7da68e6991668eaabd09447f29..042d01d5cbd51f0a45b723556b303e668ad2e686 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.cc
+++ b/content/common/gpu/media/android_video_decode_accelerator.cc
@@ -802,6 +802,11 @@ void AndroidVideoDecodeAccelerator::AssignPictureBuffers(
     return;
   }
 
+  bool have_context = false;

[DaleCurtis, 2016/03/28 18:02:02]

const bool have_context = make_context_current_.Run() and then check.

[liberato (no reviews please), 2016/03/28 20:58:18]

Done.

+  if ((have_context = make_context_current_.Run()) == false) {
+    LOG(WARNING) << "Failed make GL context current for Assign, continuing.";
+  }
+
   for (size_t i = 0; i < buffers.size(); ++i) {
     if (buffers[i].size() != size_) {
       POST_ERROR(INVALID_ARGUMENT,
@@ -818,7 +823,7 @@ 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());
   DoIOTask(true);