Rename CrasAudioClientStubImpl to FakeCrasAudioClient

Rename CrasAudioClientStubImpl to FakeCrasAudioClient

CrasAudioClientStubImpl has some fake-ish behavors
(ex. SetAudioNodesForTesting). Besides other similar classes in the
directory are named FakeWhateverClient.

BUG=309506
TEST=none

Committed: https://crrev.com/cca5cc1cadd95782faadcca310c9d211a9c03d4f
Cr-Commit-Position: refs/heads/master@{#301377}

[satorux1, 2014-10-27 05:37:50]

satorux@chromium.org changed reviewers:
+ hashimoto@chromium.org

[hashimoto, 2014-10-27 05:44:20]

lgtm

[satorux1, 2014-10-27 06:02:40]

The CQ bit was checked by satorux@chromium.org

[commit-bot: I haz the power, 2014-10-27 06:03:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/675403002/20001

[commit-bot: I haz the power, 2014-10-27 06:52:15]

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

[commit-bot: I haz the power, 2014-10-27 06:52:15]

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

[satorux1, 2014-10-27 07:03:04]

The CQ bit was checked by satorux@chromium.org

[commit-bot: I haz the power, 2014-10-27 07:03:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/675403002/40001

[commit-bot: I haz the power, 2014-10-27 07:40:10]

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

[commit-bot: I haz the power, 2014-10-27 07:40:11]

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

[satorux1, 2014-10-27 07:47:25]

satorux@chromium.org changed reviewers:
+ jamescook@chromium.org

[satorux1, 2014-10-27 07:47:26]

+jamescook for extensions/shell/

[James Cook, 2014-10-27 15:43:36]

lgtm

[James Cook, 2014-10-27 15:44:06]

Since this is just a rename I'll go ahead and CQ it.

[James Cook, 2014-10-27 15:44:10]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2014-10-27 15:46:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/675403002/60001

[commit-bot: I haz the power, 2014-10-27 16:34:08]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2014-10-27 16:34:57]

Patchset 4 (id:??) landed as
https://crrev.com/cca5cc1cadd95782faadcca310c9d211a9c03d4f
Cr-Commit-Position: refs/heads/master@{#301377}