GitLab

WebKit returns local coordinates within an iframe, we need
to convert them to page-global coordinates. In addition,
the test code needs to print page-global coordinates
(not screen-global) for easier debugging and reliable
test output.

BUG=171705
TBR=dtseng


Review URL: https://chromiumcodereview.appspot.com/12084028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179468 0039d316-1c4b-4281-b951-d872f2087c98