[Sheriff] Disable RenderThreadShutdownTest in debug mode.

BUG=368134
TBR=robliao@chromium.org, ajwong@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/253103004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266866 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/indexed_db/indexed_db_browsertest.cc

@@ -607,7 +607,8 @@ class IndexedDBBrowserTestSingleProcess : public IndexedDBBrowserTest {
 };
 
 // Crashing on Android due to kSingleProcess flag: http://crbug.com/342525
-#if defined(OS_ANDROID)
+// Also disabled in debug due to flakiness: http://crbug.com/368134
+#if defined(OS_ANDROID) || !defined(NDEBUG)
 #define MAYBE_RenderThreadShutdownTest DISABLED_RenderThreadShutdownTest
 #else
 #define MAYBE_RenderThreadShutdownTest RenderThreadShutdownTest