Added bounds checks to the URLLoader prefetch buffer threshhold.


BUG=89842
TEST=./ui_tests --gtest_filter=PPAPITest.URLLoader*PrefetchBufferThreshold


Review URL: http://codereview.chromium.org/9139076

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@117970 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed