tree 776ed050999790ff4098981cdb28b900493626d9
parent d3d230f7885a9fca32754221b9c625b739f308b3
author zijiehe <zijiehe@chromium.org> 1474678472 -0700
committer Commit bot <commit-bot@chromium.org> 1474678480 +0000

Remove differ from ScreenCapturer implementations

We can use ScreenCapturerDifferWrapper if needed, otherwise ScreenCapturer does
not need to calculate updated region itself, setting to entire screen is enough.

BUG=633802

Review-Url: https://codereview.webrtc.org/2348803003
Cr-Commit-Position: refs/heads/master@{#14377}