Complete rename of MediaHasVideo bit to MediaCanToggleControls.
Complete rename of MediaHasVideo bit to MediaCanToggleControls.

First half of this rename was committed as r170701.

Chromium side change is https://codereview.chromium.org/201573013/.

BUG=179489

Review URL: https://codereview.chromium.org/224183003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@170922 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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