[fsp] Show request logs in chrome://provided-file-systems.

chrome/browser/chromeos/file_system_provider/request_manager.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_
 
 #include <map>
 #include <string>
 
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
 #include "chrome/browser/chromeos/file_system_provider/request_value.h"
 
 namespace chromeos {
 namespace file_system_provider {
 
+// Request type, passed to RequestManager::CreateRequest. For logging purposes.
+enum RequestType {
+  REQUEST_UNMOUNT,
+  GET_METADATA,
+  READ_DIRECTORY,
+  OPEN_FILE,
+  CLOSE_FILE,
+  READ_FILE,
+  TESTING
+};
+
+// Converts a request type to human-readable format.
+std::string RequestTypeToString(RequestType type);
+
 // Manages requests between the service, async utils and the providing
 // extensions.
 class RequestManager {
  public:
-  // Request type, passed to |CreateRequest|. For logging purposes.
-  enum RequestType {
-    REQUEST_UNMOUNT,
-    GET_METADATA,
-    READ_DIRECTORY,
-    OPEN_FILE,
-    CLOSE_FILE,
-    READ_FILE,
-    TESTING
-  };
-
   // Handles requests. Each request implementation must implement
   // this interface.
   class HandlerInterface {
    public:
     virtual ~HandlerInterface() {}
 
     // Called when the request is created. Executes the request implementation.
     // Returns false in case of a execution failure.
     virtual bool Execute(int request_id) = 0;
 
@@ skipping 94 matching lines @@
   base::WeakPtrFactory<RequestManager> weak_ptr_factory_;
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestManager);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_