GViewRequestInterceptorTest.DoNotInterceptDownload fails on Chromium OS Heapcheck

Disables failing test on Heapcheck bots.

BUG=104826
TEST=Heapcheck on Chromium OS completes the unit_tests run.
TBR=rsesek@chromium.org, bauerb@chromium.org

Review URL: http://codereview.chromium.org/8602011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110792 0039d316-1c4b-4281-b951-d872f2087c98

tools/heapcheck/unit_tests.gtest-heapcheck.txt

@@ -15,3 +15,6 @@ MultiProcessLockTest.SimpleLock
 ServiceProcessStateTest.ForceShutdown
 ServiceProcessStateTest.ReadyState
 ServiceProcessStateTest.Singleton
+
+# Failing on Chromium OS. http://crbug.com/104826
+GViewRequestInterceptorTest.DoNotInterceptDownload