Makes FocusdController honor focus change if no previously active window

With desktop aura when a Window is made active the focus restore code
kicks in and attempts to restore focus to the Window that had focus
prior to losing activation. FocusController ignores requests to change
focus if during the activation phase focus changed. Together this
means the window that initiated the focus and activation change does
not get focus.

Fix is to allow the focus change through if there was previously no
active window.

BUG=321042
TEST=covered by test now
R=ben@chromium.org

Review URL: https://codereview.chromium.org/75933005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236417 0039d316-1c4b-4281-b951-d872f2087c98
Remove ChromeOS TPM slot unlock hacks that are unnecessary with chaps.

BUG=125848

Review URL: https://codereview.chromium.org/76693005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236418 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236417
Clamp max bitmap bytes to max int again.

As aedla@ pointed out, SkBitmap is sad if row bytes >= max int.

BUG=319477

Review URL: https://codereview.chromium.org/80253002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236419 0039d316-1c4b-4281-b951-d872f2087c98
Add GL_BGRA8_EXT to supported GpuMemoryBuffer formats.

BUG=321789

Review URL: https://codereview.chromium.org/76913008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236420 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236419
SVN changes up to revision 236420