Add weekly crash counters, refactor metrics_daemon, respect opt-in in library.

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"
 
 extern "C" CMetricsLibrary CMetricsLibraryNew(void) {
   MetricsLibrary* lib = new MetricsLibrary;
   return reinterpret_cast<CMetricsLibrary>(lib);
 }
 
 extern "C" void CMetricsLibraryDelete(CMetricsLibrary handle) {
   MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
   delete lib;
 }
 
 extern "C" void CMetricsLibraryInit(CMetricsLibrary handle) {
   MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
   if (lib != NULL)
     lib->Init();
 }
 
 extern "C" int CMetricsLibrarySendToUMA(CMetricsLibrary handle,
-                                        const char* name, int sample,
-                                        int min, int max, int nbuckets) {
+                                        const char* name, int sample,
+                                        int min, int max, int nbuckets) {
   MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
   if (lib == NULL)
     return 0;
   return lib->SendToUMA(std::string(name), sample, min, max, nbuckets);
 }
 
 extern "C" int CMetricsLibrarySendEnumToUMA(CMetricsLibrary handle,
-                                            const char* name, int sample,
-                                            int max) {
+                                            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 CMetricsLibraryAreMetricsEnabled(CMetricsLibrary handle) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->AreMetricsEnabled();
+}