Remove Pepper URLLoader from resource tracker early.
This protects against double delete if the instance is destroyed
as a result of canceling a load.

BUG=159429,227350

Review URL: https://chromiumcodereview.appspot.com/14695002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@197686 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed