UMA metrics for cloud policies.

chrome/browser/policy/user_policy_token_cache.cc

Index: chrome/browser/policy/user_policy_token_cache.cc
diff --git a/chrome/browser/policy/user_policy_token_cache.cc b/chrome/browser/policy/user_policy_token_cache.cc
index adba4a4e89c75f5cc9fb03081d753a99fba66216..661a170e56c6c725cc3c67e05397fcd464a694ba 100644
--- a/chrome/browser/policy/user_policy_token_cache.cc
+++ b/chrome/browser/policy/user_policy_token_cache.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/policy/user_policy_token_cache.h"
 
 #include "base/file_util.h"
+#include "chrome/browser/policy/enterprise_metrics.h"
 #include "content/browser/browser_thread.h"
 
 namespace policy {
@@ -21,6 +22,7 @@ UserPolicyTokenCache::UserPolicyTokenCache(
 
 void UserPolicyTokenCache::Load() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  em::LogTokenOperation(em::kTokenLoadRequested);
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(this, &UserPolicyTokenCache::LoadOnFileThread));
@@ -29,6 +31,7 @@ void UserPolicyTokenCache::Load() {
 void UserPolicyTokenCache::Store(const std::string& token,
                                  const std::string& device_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  em::LogTokenOperation(em::kTokenStoreRequested);
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(this,
@@ -52,6 +55,8 @@ void UserPolicyTokenCache::LoadOnFileThread() {
         device_credentials.ParseFromArray(data.c_str(), data.size())) {
       device_token = device_credentials.device_token();
       device_id = device_credentials.device_id();
+    } else {
+      em::LogTokenOperation(em::kTokenLoadFailed);
     }
   }
 
@@ -81,16 +86,22 @@ void UserPolicyTokenCache::StoreOnFileThread(const std::string& token,
   if (!success) {
     LOG(WARNING) << "Failed serialize device token data, will not write "
                  << cache_file_.value();
+    em::LogTokenOperation(em::kTokenStoreFailed);
     return;
   }
 
   if (!file_util::CreateDirectory(cache_file_.DirName())) {
     LOG(WARNING) << "Failed to create directory "
                  << cache_file_.DirName().value();
+    em::LogTokenOperation(em::kTokenStoreFailed);
     return;
   }
 
-  file_util::WriteFile(cache_file_, data.c_str(), data.length());
+  int size = data.size();
+  if (file_util::WriteFile(cache_file_, data.c_str(), size) != size) {
+    LOG(WARNING) << "Failed to write " << cache_file_.value();
+    em::LogTokenOperation(em::kTokenStoreFailed);
+  }
 }
 
 }  // namespace policy