[fsp] Add support for aborting running operations.

chrome/browser/chromeos/file_system_provider/request_manager.cc

Index: chrome/browser/chromeos/file_system_provider/request_manager.cc
diff --git a/chrome/browser/chromeos/file_system_provider/request_manager.cc b/chrome/browser/chromeos/file_system_provider/request_manager.cc
index b107ebdbdd56339b5916cc7fb50e6c4f5bf2a50e..11c871bf196e6dcc282152caa79e700ed788f3b5 100644
--- a/chrome/browser/chromeos/file_system_provider/request_manager.cc
+++ b/chrome/browser/chromeos/file_system_provider/request_manager.cc
@@ -46,6 +46,8 @@ std::string RequestTypeToString(RequestType type) {
       return "TRUNCATE";
     case WRITE_FILE:
       return "WRITE_FILE";
+    case ABORT:
+      return "ABORT";
     case TESTING:
       return "TESTING";
   }
@@ -159,8 +161,16 @@ void RequestManager::SetTimeoutForTesting(const base::TimeDelta& timeout) {
   timeout_ = timeout;
 }
 
-size_t RequestManager::GetActiveRequestsForLogging() const {
-  return requests_.size();
+std::vector<int> RequestManager::GetActiveRequestIds() const {
+  std::vector<int> result;
+
+  for (RequestMap::const_iterator request_it = requests_.begin();
+       request_it != requests_.end();
+       ++request_it) {
+    result.push_back(request_it->first);
+  }
+
+  return result;
 }
 
 void RequestManager::AddObserver(Observer* observer) {