Fix clipboard permission callbacks to account for default values.

Fix clipboard permission callbacks to account for default values.

Blink allows copy/cut to be triggered with a user gesture, but the
chrome implementation of WebPermissionsClient was clobbering that
bit of information.

BUG=424968
Committed: https://crrev.com/07d72f48a5603798519b459eed83eb4a68b10069
Cr-Commit-Position: refs/heads/master@{#316269}

[dcheng, 2015-02-11 20:49:33]

dcheng@chromium.org changed reviewers:
+ kalman@chromium.org, thestig@chromium.org

[dcheng, 2015-02-11 20:53:04]

The test coverage is incomplete, but I wasn't able to find a simple way to
execute JS without a user gesture in a hosted app. I'd like to remove the
implicit user gesture from content::RFH::ExecuteJavascriptForTests() and force
test code that really wants a user gesture to instantiate a WebScopedUserGesture
on the stack... but I'd like to do this in a followup CL, as it's likely to be a
complicated, messy set of changes.

[sky, 2015-02-11 20:56:50]

sky@chromium.org changed reviewers:
+ sky@chromium.org

[sky, 2015-02-11 20:56:50]

LGTM

[not at google - send to devlin, 2015-02-11 22:28:13]

lgtm

[dcheng, 2015-02-12 18:17:07]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2015-02-12 18:18:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/913253002/40001

[commit-bot: I haz the power, 2015-02-12 19:23:51]

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

[commit-bot: I haz the power, 2015-02-12 19:23:53]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[dcheng, 2015-02-12 21:11:04]

New patchsets have been uploaded after l-g-t-m from
sky@chromium.org,kalman@chromium.org

[dcheng, 2015-02-12 21:12:35]

kalman@, mind taking a look at the content_capabilities_browsertest.cc changes?

[dcheng, 2015-02-13 18:30:56]

ping =)

[not at google - send to devlin, 2015-02-13 18:41:34]

heh, oh well. lgtm.

[dcheng, 2015-02-13 18:43:41]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2015-02-13 18:45:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/913253002/60001

[commit-bot: I haz the power, 2015-02-13 20:13:40]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-02-13 20:14:16]

Patchset 4 (id:??) landed as
https://crrev.com/07d72f48a5603798519b459eed83eb4a68b10069
Cr-Commit-Position: refs/heads/master@{#316269}