Bug 825620 - Refactor plugin quirks on OSX to properly initialize values. r=smichaud

dom/plugins/ipc/PluginModuleChild.cpp

@@ -181,10 +181,6 @@ PluginModuleChild::Init(const std::string& aPluginFilename,
     }
 #else // defined(OS_MACOSX)
     mozilla::plugins::PluginUtilsOSX::SetProcessName(info.fName);
-    NS_NAMED_LITERAL_CSTRING(flashHead, "Shockwave Flash");
-    if (StringBeginsWith(nsDependentCString(info.fDescription), flashHead)) {
-        AddQuirk(QUIRK_FLASH_AVOID_CGMODE_CRASHES);
-    }
 #endif
 
     if (!mLibrary)
@@ -1997,6 +1993,9 @@ PluginModuleChild::InitQuirksModes(const nsCString& aMimeType)
     // Whitelist Flash and Quicktime to support offline renderer
     NS_NAMED_LITERAL_CSTRING(flash, "application/x-shockwave-flash");
     NS_NAMED_LITERAL_CSTRING(quicktime, "QuickTime Plugin.plugin");
+    if (FindInReadable(flash, aMimeType)) {
+      mQuirks |= QUIRK_FLASH_AVOID_CGMODE_CRASHES;
+    }
     if (FindInReadable(flash, aMimeType) ||
         FindInReadable(quicktime, mPluginFilename)) {
         mQuirks |= QUIRK_ALLOW_OFFLINE_RENDERER;