Fix timing out of perf test: Canvas/upload-canvas-2d-to-texture.html

content_shell can not decode mov, so this CL makes canvas tests use mp4 file.
the desktop Perf bots (Windows, Mac, and Linux) do actually build Chrome-branded
binaries including all of the media codecs so H.264 encoded mp4 file can be
decoded.

bear-1280x720.mp4 is copied from chromium; src/media/test/data
Canvas video perf tests run on only the platform which can decode mp4 video.

BUG=242244, 358168

Review URL: https://codereview.chromium.org/219023009

git-svn-id: svn://svn.chromium.org/blink/trunk@170521 bbb929c8-8fbe-4397-9dbb-9b2b20218538