Add support for capturers to capture VideoFrames.

webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java

Index: webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
diff --git a/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java b/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
index 91bb39fbb7ec1651d6c075282184c81d26cb4878..d9af85b96c74641dd5d84d2a699c2cbb6ac8dd34 100644
--- a/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
+++ b/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
@@ -135,6 +135,7 @@ class CameraVideoCapturerTestFixtures {
         frameLock.notify();
       }
     }
+
     @Override
     public void onTextureFrameCaptured(int width, int height, int oesTextureId,
         float[] transformMatrix, int rotation, long timeStamp) {
@@ -148,6 +149,11 @@ class CameraVideoCapturerTestFixtures {
       }
     }
 
+    @Override
+    public void onFrameCaptured(VideoFrame frame) {
+      // Empty on purpose.
+    }
+
     public boolean waitForCapturerToStart() throws InterruptedException {
       Logging.d(TAG, "Waiting for the capturer to start");
       synchronized (capturerStartLock) {