Bug 1224374 - Profiler labels for the 25 top chrome hangs;r=BenWa,MarcoZ

Experience shows that we do not have enough profiler labels to make
BHR hang reports meaningful. This patch adds enough labels to let us
exploit hang reports matching the 25 topmost chrome hangs.

dom/plugins/ipc/PluginModuleParent.cpp

@@ -110,6 +110,7 @@ mozilla::plugins::SetupBridge(uint32_t aPluginId,
                               nsresult* rv,
                               uint32_t* runID)
 {
+    PROFILER_LABEL_FUNC(js::ProfileEntry::Category::OTHER);
     if (NS_WARN_IF(!rv) || NS_WARN_IF(!runID)) {
         return false;
     }