Spoken Feedback Browsertest: AddBookmark test and some structural changes

Spoken Feedback Browsertest: AddBookmark test and some structural changes

- restructured existing code to allow some tests to run in only normal mode
- added AddBookmark test to check ChromeVox while adding a bookmark
- switched SendKeyPress to SendKeyPressToWindowSync throughout all tests
- reordered expected ChromeVox messages and reenabled TypeInOmnibox test

BUG=None
TEST=this
R=dmazzoni@chromium.org
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278304

[dmazzoni, 2014-06-18 22:19:11]

lgtm

[kathrelkeld, 2014-06-18 23:54:26]

The CQ bit was checked by kathrelkeld@chromium.org

[commit-bot: I haz the power, 2014-06-18 23:55:37]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/kathrelkeld@chromium.org/342773002/1

[commit-bot: I haz the power, 2014-06-19 02:12:32]

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

[commit-bot: I haz the power, 2014-06-19 02:12:33]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[dmazzoni, 2014-06-19 05:01:27]

The CQ bit was checked by dmazzoni@chromium.org

[commit-bot: I haz the power, 2014-06-19 05:05:07]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/kathrelkeld@chromium.org/342773002/1

[commit-bot: I haz the power, 2014-06-19 07:54:29]

Change committed as 278304