Disable RenderViewTest.MacTestCmdUp.

With blink r159291, this test fails because the test makes
the now incorrect assumption that ProcessPendingMessages will
fire scroll events.

BUG=306179
TBR=jamesr@chromium.org

Review URL: https://codereview.chromium.org/26889002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227972 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227972
Enable bandwidth metrics for iOS.

iOS CL: https://chromereviews.googleplex.com/10293015/

BUG=298215

Review URL: https://codereview.chromium.org/25804006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227973 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227973