PDF Viewer - Add keyboard shortcuts for rotation

PDF Viewer - Add keyboard shortcuts for rotation

Currently there are no keyboard shortcuts to rotate pdf
documents. This patch adds the following keyboard shortcuts
to rotate pdf documents :

Rotate counterclockwise : Control + [
Rotate clockwise        : Control + ]

BUG=111232
Committed: https://crrev.com/cb0114633bb478c4636126d9d2ed87c1580e9ff8
Cr-Commit-Position: refs/heads/master@{#295757}

[Nikhil, 2014-09-18 05:31:26]

n.bansal@samsung.com changed reviewers:
+ raymes@chromium.org, thestig@chromium.org, vitalybuka@chromium.org

[Nikhil, 2014-09-18 05:31:26]

PTAL at my changes to add keyboard shortcuts to rotate pdf documents.

If you've any review comments, then please let me know. I'll incorporate them.

Thanks

[Lei Zhang, 2014-09-18 20:41:07]

lgtm

https://codereview.chromium.org/581913003/diff/1/chrome/browser/resources/pdf...
File chrome/browser/resources/pdf/pdf.js (right):

https://codereview.chromium.org/581913003/diff/1/chrome/browser/resources/pdf...
chrome/browser/resources/pdf/pdf.js:261: case 219: // left bracket.
nit: 2 spaces before //

[Nikhil, 2014-09-19 14:12:47]

Rebase and nit fix done. PTAL. 

Thanks!

https://codereview.chromium.org/581913003/diff/1/chrome/browser/resources/pdf...
File chrome/browser/resources/pdf/pdf.js (right):

https://codereview.chromium.org/581913003/diff/1/chrome/browser/resources/pdf...
chrome/browser/resources/pdf/pdf.js:261: case 219: // left bracket.
On 2014/09/18 20:41:06, Lei Zhang wrote:
> nit: 2 spaces before //

Done.

[Lei Zhang, 2014-09-19 18:33:10]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2014-09-19 18:35:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/581913003/20001

[commit-bot: I haz the power, 2014-09-19 19:16:24]

Committed patchset #2 (id:20001) as b85aa171dfcb8da516e87d30e1632e61b0fdfba4

[commit-bot: I haz the power, 2014-09-19 19:17:30]

Patchset 2 (id:??) landed as
https://crrev.com/cb0114633bb478c4636126d9d2ed87c1580e9ff8
Cr-Commit-Position: refs/heads/master@{#295757}