[Sync] Put everything in sync/api into csync namespace

chrome/browser/extensions/settings/settings_sync_processor.h

 // Copyright (c) 2012 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_EXTENSIONS_SETTINGS_SETTINGS_SYNC_PROCESSOR_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_SYNC_PROCESSOR_H_
 #pragma once
 
 #include <set>
 #include <string>
 
 #include "chrome/browser/value_store/value_store_change.h"
 #include "sync/api/sync_error.h"
 
+namespace csync {
 class SyncChangeProcessor;
+}  // namespace csync
 
 namespace extensions {
 
 // A wrapper for a SyncChangeProcessor that deals specifically with the syncing
 // of a single extension's settings. Handles:
 //  - translating SettingChanges into calls into the Sync API.
 //  - deciding whether to ADD/REMOVE/SET depending on the current state of
 //    settings.
 //  - rate limiting (inherently per-extension, which is what we want).
 class SettingsSyncProcessor {
  public:
   SettingsSyncProcessor(const std::string& extension_id,
                         syncable::ModelType type,
-                        SyncChangeProcessor* sync_processor);
+                        csync::SyncChangeProcessor* sync_processor);
   ~SettingsSyncProcessor();
 
   // Initializes this with the initial state of sync.
   void Init(const DictionaryValue& initial_state);
 
   // Sends |changes| to sync.
-  SyncError SendChanges(const ValueStoreChangeList& changes);
+  csync::SyncError SendChanges(const ValueStoreChangeList& changes);
 
   // Informs this that |changes| have been receieved from sync. No action will
   // be taken, but this must be notified for internal bookkeeping.
   void NotifyChanges(const ValueStoreChangeList& changes);
 
   syncable::ModelType type() { return type_; }
 
  private:
   // ID of the extension the changes are for.
   const std::string extension_id_;
 
   // Sync model type. Either EXTENSION_SETTING or APP_SETTING.
   const syncable::ModelType type_;
 
   // The sync processor used to send changes to sync.
-  SyncChangeProcessor* const sync_processor_;
+  csync::SyncChangeProcessor* const sync_processor_;
 
   // Whether Init() has been called.
   bool initialized_;
 
   // Keys of the settings that are currently being synced. Used to decide what
   // kind of action (ADD, UPDATE, REMOVE) to send to sync.
   std::set<std::string> synced_keys_;
 
   DISALLOW_COPY_AND_ASSIGN(SettingsSyncProcessor);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_SYNC_PROCESSOR_H_