Fix gn check errors for storage/common:common

Fix gn check errors for storage/common:common

Once blink headers are added as sources (https://codereview.chromium.org/1222673004/), if you run the following
command line, you will get errors like this:

$ gn check
ERROR at //storage/common/fileapi/file_system_util.h:17:11: Include not allowed.
          ^------------------------------------------------
It is not in any dependency of
  //storage/common:common
The include file is in the target(s):
  //third_party/WebKit/public:blink_headers
which should somehow be reachable.

BUG=367595
Committed: https://crrev.com/deb02768bf9805279461259119a845aa2c734e25
Cr-Commit-Position: refs/heads/master@{#337904}

[agrieve, 2015-07-04 02:34:53]

agrieve@chromium.org changed reviewers:
+ brettw@chromium.org

[brettw, 2015-07-07 21:57:21]

I don't think anything labeled "common" (shared between browser and renderer
process) should depend on blink, or it will start linking blink into the browser
process.

It looks like in this case it just needs a typedef. I think there is a special
blink headers target that allows one to get the headers and defines, but doesn't
link anything.

[agrieve, 2015-07-08 18:23:53]

On 2015/07/07 21:57:21, brettw wrote:
> I don't think anything labeled "common" (shared between browser and renderer
> process) should depend on blink, or it will start linking blink into the
browser
> process.
> 
> It looks like in this case it just needs a typedef. I think there is a special
> blink headers target that allows one to get the headers and defines, but
doesn't
> link anything.

Changed it to :blink_headers (assuming this is what you're talking about).

[brettw, 2015-07-08 20:08:22]

lgtm

[agrieve, 2015-07-08 20:10:26]

The CQ bit was checked by agrieve@chromium.org

[commit-bot: I haz the power, 2015-07-08 20:10:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1222733002/20001

[commit-bot: I haz the power, 2015-07-08 20:51:12]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-08 20:52:05]

Patchset 2 (id:??) landed as
https://crrev.com/deb02768bf9805279461259119a845aa2c734e25
Cr-Commit-Position: refs/heads/master@{#337904}