Revert 235647 "Add UMA for <webview> APIs: a. ClearData, b. when..."

Suspected to break Linux ASAN tests:
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Linux%20ASAN%20Tests%20%283%29&number=18746
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Linux%20ASAN%20Tests%20%282%29&number=19801

> Add UMA for <webview> APIs: a. ClearData, b. when Permission request is allowed.
> 
> BUG=317084
> Test=None
> 
> Review URL: https://codereview.chromium.org/69913002

TBR=lazyboy@chromium.org

Review URL: https://codereview.chromium.org/65043018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235668 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235668
Minor tweaks to Makefile to make it easier to push docs to DevSite.
- Default to dev directory for devsite-prod build.
- Remove unneeded build artifacts for devsite-prod build.

R=sbc@chromium.org

Review URL: https://codereview.chromium.org/72213002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235669 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235669