Add support for user actions to the metrics library and the metrics clients.

c_metrics_library.cc

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 //
 // C wrapper to libmetrics
 //
 
 #include "c_metrics_library.h"
 #include "metrics_library.h"
@@ skipping 25 matching lines @@
 
 extern "C" int CMetricsLibrarySendEnumToUMA(CMetricsLibrary handle,
                                             const char* name, int sample,
                                             int max) {
   MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
   if (lib == NULL)
     return 0;
   return lib->SendEnumToUMA(std::string(name), sample, max);
 }
 
+extern "C" int CMetricsLibrarySendUserActionToUMA(CMetricsLibrary handle,
+                                                  const char* action) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendUserActionToUMA(std::string(action));
+}
+
 extern "C" int CMetricsLibraryAreMetricsEnabled(CMetricsLibrary handle) {
   MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
   if (lib == NULL)
     return 0;
   return lib->AreMetricsEnabled();
 }