Media Galleries: Fix the accept button in the permission dialog.

Currently, it is sometimes grayed out when it should not be.

BUG=351522
TEST=see bug

Review URL: https://codereview.chromium.org/196163002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256620 0039d316-1c4b-4281-b951-d872f2087c98
Removing the WebRTCAudioDeviceTest test suite.

We have decided to remove this test since it seems to cost more than it saves. The scope is too wide, most tests are ad-hoc tests and several tests are manual. Also, it has resulted in a long list of reported issues which are platform dependent.

BUG=238490,268376,269348,247447,238490,318189,167299,131154,155284,247163,103711,148865,331030
TEST=content_unittests

Review URL: https://codereview.chromium.org/194813002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256621 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256621