Begin renaming the WebKit namespace to blink

Begin renaming the WebKit namespace to blink

This CL introduces a global preprocessor macro to rename WebKit to blink. After
this CL lands, we'll update the code to use the blink namespace incrementally.
Once we've converted all the code, we'll remove the preprocessor macro.

R=jamesr@chromium.org, jamesr
BUG=295096
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=233284

[abarth-chromium, 2013-09-19 21:36:16]

This CL isn't quite ready to land.  We'll need to update the Clang plugin first
(see https://codereview.chromium.org/24020005/).  I suspect there will also be
other dependencies.

[jamesr, 2013-09-19 21:50:51]

As expected this breaks the clang bots, but lgtm once that's resolved.

https://codereview.chromium.org/24246009/diff/1/build/common.gypi
File build/common.gypi (right):

https://codereview.chromium.org/24246009/diff/1/build/common.gypi#newcode1922
build/common.gypi:1922: # TODO(abarth): Remove this define when we've updated
the code.
in addition to the TODO() please add a link to the bug so people can chase it
down without having to dig through revision control

[commit-bot: I haz the power, 2013-11-05 21:47:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abarth@chromium.org/24246009/24001

[commit-bot: I haz the power, 2013-11-05 23:48:18]

Retried try job too often on linux_rel for step(s) interactive_ui_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_rel&...

[commit-bot: I haz the power, 2013-11-06 00:53:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abarth@chromium.org/24246009/24001

[commit-bot: I haz the power, 2013-11-06 04:44:07]

Retried try job too often on linux_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_aura...

[commit-bot: I haz the power, 2013-11-06 04:49:41]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abarth@chromium.org/24246009/24001

[commit-bot: I haz the power, 2013-11-06 09:23:32]

Retried try job too often on linux_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_aura...

[commit-bot: I haz the power, 2013-11-06 15:36:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abarth@chromium.org/24246009/24001

[abarth-chromium, 2013-11-06 17:32:21]

Committed patchset #3 manually as r233284 (presubmit successful).