Rename WebCore namespace to blink in Platform

Rename WebCore namespace to blink in Platform

TBR=eseidel@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178475

[abarth-chromium, 2014-07-18 05:14:51]

The CQ bit was checked by abarth@chromium.org

[commit-bot: I haz the power, 2014-07-18 05:15:14]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/abarth@chromium.org/400543004/1

[abarth-chromium, 2014-07-18 05:17:45]

This CL was generated by the same python library I used for the WebKit -> blink
namespace rename.

[commit-bot: I haz the power, 2014-07-18 06:39:40]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_blink_compile_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/android_blink_compile_db...)
  android_blink_compile_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/android_blink_compile_re...)
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/17634)

[commit-bot: I haz the power, 2014-07-18 07:37:37]

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

[commit-bot: I haz the power, 2014-07-18 07:37:41]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/17646)

[abarth-chromium, 2014-07-18 19:37:02]

Committed patchset #1 manually as r178475 (presubmit successful).