Makes some of the tests in views/corewm extend AuraTestBase

This way they don't have a dependency on views.

BUG=none
TEST=none
R=ben@chromium.org

Review URL: https://codereview.chromium.org/180083003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253474 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253474
Switch static text role on Windows.

Using ROLE_SYSTEM_TEXT was only for legacy reasons, but
ROLE_SYSTEM_STATICTEXT is better and seems to work fine
with modern screen readers.

We should revert if this causes problems for existing
software that can't easily adapt to this change.

BUG=328261

Review URL: https://codereview.chromium.org/175383005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253475 0039d316-1c4b-4281-b951-d872f2087c98
[mac] Implement dragging of multiple tabs to a new window or another window.

BUG=10899
TEST=Cmd-click to select multiple tabs, drag up or down to detach, drop tabs to another window or make a new window.

Review URL: https://codereview.chromium.org/157403004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253476 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253475
SVN changes up to revision 253476