[sync] Allow FakeURLFetcher to return an arbitrary URLRequestStatus

In r232724, FakeURLFetcher went from being able to return only HTTP/200
or HTTP/500, to being able to return any arbitrary HttpResponseCode.
However, the URLRequestStatus returned was hard coded to FAILURE for
HTTP/5xx and SUCCESS for all other codes.

This patch further modifies FakeURLFetcher to be able to return
arbitrary URLRequestStatus values in addition to an HttpResponseCode.
We no longer hard code the URLRequestStatus based on the
HttpResponseCode being returned. It also updates all call sites that
currently use FakeURLFetcher.

R=achuith@chromium.org, ajwong@chromium.org, akalin@chromium.org, mattm@chromium.org, mmenke@chromium.org, nyquist@chromium.org, sky@chromium.org, tim@chromium.org, vitalybuka@chromium.org
TBR=bengr, sergeyu
BUG=313905
TEST=All existing tests pass trybots and waterfall

Review URL: https://codereview.chromium.org/60923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233304 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233304
[Prerender] Avoid setting prerender requests for sync XHRs to IDLE priority

This triggered a DCHECK in https://codereview.chromium.org/51683002/ .

BUG=166689
R=davidben@chromium.org, jam@chromium.org

Review URL: https://codereview.chromium.org/60193004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233305 0039d316-1c4b-4281-b951-d872f2087c98
Auto refresh avatar bubble after adding a secondary account

BUG=
R=rogerta@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/58183002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233306 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233306
Fix malformed 9-patch images.

These images were not valid Android 9-patches as their borders did not
correctly indicate the stretchable and static areas of each image.

BUG=314199
R=dtrainor@chromium.org

Review URL: https://codereview.chromium.org/60453002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233307 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233307