Disable flaky test WebViewTest.GeolocationRequestGone.

BUG=302095
TBR=acolwell@chromium.org

Review URL: https://codereview.chromium.org/25403003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226095 0039d316-1c4b-4281-b951-d872f2087c98
enhance MenuItemView, MenuModelAdapter and SimpleMenuModel for dynamic model and menu

this is in preparation for dynamic model and menu for recent tabs submenu:
- move model-specific method from MenuItemView to MenuModelAdapter
- add method to MenuModelAdapter to add menu item at specific index from model
- add RemoveItemAt to SimpleMenuModel

BUG=256750
TEST=nothing yet.

Review URL: https://codereview.chromium.org/25174004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226096 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226096
Remove Ash accelerator OPEN_FILE_DIALOG; let Chrome handle it as IDC_OPEN_FILE.

The Ctrl-O had once been handled as global shortcut, but now it is
no-op when no browser is open. It can be moved back to browser
shortcut, as it is handled in all other platforms than Chrome OS.

BUG=301445, 251492

Review URL: https://codereview.chromium.org/25225002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226097 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226097