Re-enable TouchCursorInTextfieldTest with some fixes and logs

Re-enable TouchCursorInTextfieldTest with some fixes and logs

Re-enabled TouchEditableImplAuraTest.TouchCursorInTextfieldTest with two
fixes:
 - Changed focus_textfield() in touch_seleciton.html to collapse
   selection after focus, since nothing should be selected after
   focusing the textfield.
 - Added a wait between dragging the handle and getting the cursor
   position in the test to be sure that the cursor position is updated
   completely.
Also, added some logs in the test so that if it failed again, more data
is available for investigation.

BUG=235991
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=221596

[varunjain, 2013-09-05 22:34:41]

LGTM
+sky for OWNERs

https://codereview.chromium.org/23823004/diff/6001/content/test/data/touch_se...
File content/test/data/touch_selection.html (right):

https://codereview.chromium.org/23823004/diff/6001/content/test/data/touch_se...
content/test/data/touch_selection.html:21:
window.getSelection().collapseToStart();
nit: small comment on why this is required.

[sky, 2013-09-05 23:41:23]

LGTM

[commit-bot: I haz the power, 2013-09-05 23:47:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mohsen@chromium.org/23823004/13001

[commit-bot: I haz the power, 2013-09-06 06:02:57]

Change committed as 221596

[henrika (OOO until Aug 14), 2013-09-06 08:58:49]

Reverted. See
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%2...
for details.