Move blink<->cc bindings to cc/blink

Move blink<->cc bindings to cc/blink

These files provide the implementations of the public Blink API that
bind to the cc implementation. This moves them out of content/ into a
subdirectory of cc/ so that we can reuse these files in mojo which
can depend on cc/ and on blink but not on content/. To make sure we
don't introduce dependencies from cc/ on blink proper, cc/DEPS forbids
including cc/blink/ and cc/blink/DEPS allows using the blink headers.
cc_blink is built as a separate component to avoid linking anything from
blink into targets that don't care about the blink bindings (such as
the browser compositor).

R=darin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290464

[jamesr, 2014-08-14 23:32:34]

There are various parts of the blink platform API that abstract over different
libraries that exist in chromium.  For each of these we have a glue library
somewhere that basically translates the types.  Today these are mostly in
content/ since that's what handles embedding blink which is great except they
can't be shared by mojo apps without linking in all of content, which is not
desirable.

This moves the cc bindings out to a subdirectory of cc that links as a separate
component and has deps restrictions to try to keep the dependencies under
control.  We can extend this for other libraries that need blink components if
we like the pattern.

[darin (slow to review), 2014-08-14 23:58:23]

LGTM

[jamesr, 2014-08-18 22:52:08]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-08-18 22:53:05]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamesr@chromium.org/470983004/140001

[commit-bot: I haz the power, 2014-08-19 00:28:19]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg_tri...)

[commit-bot: I haz the power, 2014-08-19 01:01:17]

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

[commit-bot: I haz the power, 2014-08-19 01:01:19]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg_tri...)

[jamesr, 2014-08-19 01:21:48]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-08-19 01:22:56]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamesr@chromium.org/470983004/160001

[commit-bot: I haz the power, 2014-08-19 02:47:44]

Committed patchset #9 (160001) as 290464