Always on statistics for AndroidMediaEncoder.

Earlier, no statistics were reported if no frames were being delivered
for encoding. This makes statics always be reported regardless of if
there are frames being delivered to the encoder.

Review-Url: https://codereview.webrtc.org/2051403002
Cr-Original-Commit-Position: refs/heads/master@{#13122}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 1fc48100064f5a46cd0254bac898fdbff0f8ab4d
2 files changed