add suppression for intentional crash in PluginTest

TBR=jam@chromium.org
BUG=NONE

Review URL: https://codereview.chromium.org/331753002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276818 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/drmemory/suppressions.txt

@@ -612,3 +612,11 @@ system call NtCreateEvent
 *!mojo::system::Core::WaitManyInternal
 *!mojo::system::Core::WaitMany
 *!MojoWaitMany
+
+UNADDRESSABLE ACCESS
+name=IntentionalCrashPluginTest.plugin_client.cc
+npapi_test_plugin.dll!NP_Initialize
+...
+*!content::PluginLib::NP_Initialize
+*!content::PluginThread::PluginThread
+*!content::PluginMain