Add hotlinks to individual samples in extension samples directory.
Update page hash when searching for samples.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/5989011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70526 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed