Check whether the Pepper CDM is available before adding the key system.

content/browser/plugin_service_impl.cc

Index: content/browser/plugin_service_impl.cc
diff --git a/content/browser/plugin_service_impl.cc b/content/browser/plugin_service_impl.cc
index 5a79f7dcc845e43f15a74ca7e3b6a4bcd7b0eb06..52b3c0bf6edb74ec9625adfcdcb10c403f7d82ee 100644
--- a/content/browser/plugin_service_impl.cc
+++ b/content/browser/plugin_service_impl.cc
@@ -681,6 +681,20 @@ PepperPluginInfo* PluginServiceImpl::GetRegisteredPpapiPluginInfo(
   return &ppapi_plugins_[ppapi_plugins_.size() - 1];
 }
 
+bool PluginServiceImpl::IsPepperPluginRegisteredForMimeType(
+    const std::string& mime_type) {
+  for (size_t i = 0; i < ppapi_plugins_.size(); i++) {

[scherkus (not reviewing), 2013/09/16 17:42:05]

nit: ++i (rest of this file is consistent with that usage)

[ddorwin, 2013/09/16 18:28:58]

Done.

+    const std::vector<WebPluginMimeType> & mime_types =

[scherkus (not reviewing), 2013/09/16 17:42:05]

nit: remove space before &

[ddorwin, 2013/09/16 18:28:58]

Done.

+        ppapi_plugins_[i].mime_types;
+    for (size_t j = 0; j < mime_types.size(); j++) {

[scherkus (not reviewing), 2013/09/16 17:42:05]

nit: ++j

[ddorwin, 2013/09/16 18:28:58]

Done.

+      if (mime_types[j].mime_type == mime_type)
+        return true;
+    }
+  }
+
+  return false;
+}
+
 #if defined(OS_POSIX) && !defined(OS_OPENBSD) && !defined(OS_ANDROID)
 // static
 void PluginServiceImpl::RegisterFilePathWatcher(FilePathWatcher* watcher,