VideoCapturerAndroid: Add possibility to request a new resolution from the video adapter.

talk/app/webrtc/androidvideocapturer.cc

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 224 matching lines @@
 
 void AndroidVideoCapturer::OnIncomingFrame(void* frame_data,
                                            int length,
                                            int rotation,
                                            int64 time_stamp) {
   CHECK(thread_checker_.CalledOnValidThread());
   frame_factory_->UpdateCapturedFrame(frame_data, length, rotation, time_stamp);
   SignalFrameCaptured(this, frame_factory_->GetCapturedFrame());
 }
 
+void AndroidVideoCapturer::OnOutputFormatRequest(
+    int width, int height, int fps) {
+  CHECK(thread_checker_.CalledOnValidThread());
+  const cricket::VideoFormat& current = video_adapter()->output_format();
+  cricket::VideoFormat format(
+      width, height, cricket::VideoFormat::FpsToInterval(fps), current.fourcc);
+  video_adapter()->OnOutputFormatRequest(format);
+}
+
 }  // namespace webrtc