Additional heapcheck suppression for MockBufferedDataSource.

BUG=100914
TBR=scherkus@chromium.org

Review URL: http://codereview.chromium.org/8743006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112196 0039d316-1c4b-4281-b951-d872f2087c98

tools/heapcheck/suppressions.txt

@@ -1810,3 +1810,9 @@
    ...
    fun:webkit_media::BufferedDataSourceTest::Initialize
 }
+{
+   bug_100914_d
+   Heapcheck:Leak
+   fun:webkit_media::MockBufferedDataSource::MockBufferedDataSource
+   fun:webkit_media::BufferedDataSourceTest::BufferedDataSourceTest
+}