MacViews: Enable some accelerator tests.

MacViews: Enable some accelerator tests.


MacViews: Fix accelerator handling while Omnibox is in focus.

Currently in both Cocoa and MacViewsBrowser when Omnibox is in focus the
accelerators are only handled in -[NativeWidgetMacNSWindow
performKeyEquivalent:], which internally uses ChromeCommandDispatcherDelegate,
which consults global_keyboard_shortcuts_cocoa_mac.mm's tables.

In crbug.com/620315 we're trying to migrate the
global_keyboard_shortcuts_cocoa_mac.mm's tables over to accelerator_table.cc.

BUG=665823
patch from issue 2505943002 at patchset 1 (http://crrev.com/2505943002#ps1)

[tapted, 2016-11-17 05:38:52]

The CQ bit was checked by tapted@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-17 05:39:36]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-17 05:57:39]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-11-17 05:57:40]

Dry run: Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)