Refactor RendererAccessibiltiyComplete back into RendererAccessibility.

Refactor RendererAccessibiltiyComplete back into RendererAccessibility.

After landing of https://codereview.chromium.org/651593002,
the inheritance relationship between RendererAccessibility and
RendererAccessibiltiyComplete is not necessary anymore.
So we can make them one class.

BUG=417758
Committed: https://crrev.com/fef4b7c4c2d59f71059e0ca93a3aef3f009b7e5b
Cr-Commit-Position: refs/heads/master@{#302197}

[Sungmann Cho, 2014-10-29 21:32:00]

sungmann.cho@navercorp.com changed reviewers:
+ dmazzoni@chromium.org

[Sungmann Cho, 2014-10-30 06:06:50]

Please take a look. Thanks!

[dmazzoni, 2014-10-30 15:15:48]

dmazzoni@chromium.org changed reviewers:
+ nasko@chromium.org

[dmazzoni, 2014-10-30 15:15:49]

lgtm

+nasko for OWNERS review of content/

https://codereview.chromium.org/688173002/diff/1/content/renderer/accessibili...
File content/renderer/accessibility/renderer_accessibility.h (right):

https://codereview.chromium.org/688173002/diff/1/content/renderer/accessibili...
content/renderer/accessibility/renderer_accessibility.h:42: // This class
implements complete accessibility support for assistive
Thank you for carefully merging the comments too, I appreciate it!

[nasko, 2014-10-30 23:31:13]

Rubberstamp LGTM, as dmazzoni@ knows this code and has reviewed it.

[Sungmann Cho, 2014-10-30 23:35:04]

The CQ bit was checked by sungmann.cho@navercorp.com

[commit-bot: I haz the power, 2014-10-30 23:36:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/688173002/1

[commit-bot: I haz the power, 2014-10-31 00:25:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-31 00:25:57]

Patchset 1 (id:??) landed as
https://crrev.com/fef4b7c4c2d59f71059e0ca93a3aef3f009b7e5b
Cr-Commit-Position: refs/heads/master@{#302197}