Collect more data to send in crash reports for a crasher that's stumping me.

BUG=302530
R=brettw@chromium.org

Review URL: https://codereview.chromium.org/25555006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226398 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226398
Move FileAPI test code from webkit to content

(Namespace fix will come later)

BUG=265769
TEST=build

Review URL: https://codereview.chromium.org/23440033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226399 0039d316-1c4b-4281-b951-d872f2087c98
Endure: rename trace names, making them lowercase

BUG=

Review URL: https://codereview.chromium.org/23449041

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226400 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226400