Standardize usage of virtual/override/final in google_apis/

Standardize usage of virtual/override/final in google_apis/

This patch was automatically generated by applying clang fixit hints
generated by the plugin to the source tree.

BUG=417463
TBR=rogerta@chromium.org

Committed: https://crrev.com/f93bb58024cffd2b08e691f43138d789641708cb
Cr-Commit-Position: refs/heads/master@{#300495}

[dcheng, 2014-10-21 10:57:52]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-21 11:01:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/649283003/1

[commit-bot: I haz the power, 2014-10-21 12:46:01]

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

[commit-bot: I haz the power, 2014-10-21 12:46:03]

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

[dcheng, 2014-10-21 15:43:48]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-21 15:44:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/649283003/1

[commit-bot: I haz the power, 2014-10-21 16:12:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-21 16:13:01]

Patchset 1 (id:??) landed as
https://crrev.com/f93bb58024cffd2b08e691f43138d789641708cb
Cr-Commit-Position: refs/heads/master@{#300495}