Fix for 'Rotate clockwise/counter clockwise' should not present in context menu in crashed PDF page.

Fix for 'Rotate clockwise/counter clockwise' should not present in context menu in crashed PDF page.

When we are in the crashed PDf page then rotate does not have any use and it does
nothing as only sad_plugin bitmap is painted.
So rotate menu items should not present in the context menu.
Changes done to check when plugin is crashed then rotation is not allowed.
and rotate menu items are not added in context menu.

BUG=462525
Committed: https://crrev.com/611754aea9d1c0ba5c7980fa267fd005dc249b85
Cr-Commit-Position: refs/heads/master@{#318647}

[Deepak, 2015-02-28 05:59:25]

deepak.m1@samsung.com changed reviewers:
+ raymes@chromium.org

[Deepak, 2015-02-28 05:59:26]

PTAL. 
Thanks

[raymes, 2015-03-01 22:58:54]

lgtm

[Deepak, 2015-03-02 02:46:18]

The CQ bit was checked by deepak.m1@samsung.com

[commit-bot: I haz the power, 2015-03-02 02:47:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/962193002/1

[commit-bot: I haz the power, 2015-03-02 04:21:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-02 04:22:03]

Patchset 1 (id:??) landed as
https://crrev.com/611754aea9d1c0ba5c7980fa267fd005dc249b85
Cr-Commit-Position: refs/heads/master@{#318647}