Fix a memory leak when cleaning the queued data frames.
Fix a memory leak when cleaning the queued data frames.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6298021

git-svn-id: http://src.chromium.org/svn/trunk/src@73024 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 5846e724e9f44dedfe61ce0a4aa4fa4cb7b57d0c
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser