[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/internal_api/http_bridge.cc

 // 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.
 
 #include "sync/internal_api/public/http_bridge.h"
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/string_number_conversions.h"
 #include "net/base/host_resolver.h"
@@ skipping 47 matching lines @@
 HttpBridgeFactory::HttpBridgeFactory(
     net::URLRequestContextGetter* baseline_context_getter,
     const std::string& user_agent)
     : request_context_getter_(
         new HttpBridge::RequestContextGetter(
             baseline_context_getter, user_agent)) {}
 
 HttpBridgeFactory::~HttpBridgeFactory() {
 }
 
-syncer::HttpPostProviderInterface* HttpBridgeFactory::Create() {
+HttpPostProviderInterface* HttpBridgeFactory::Create() {
   HttpBridge* http = new HttpBridge(request_context_getter_);
   http->AddRef();
   return http;
 }
 
-void HttpBridgeFactory::Destroy(syncer::HttpPostProviderInterface* http) {
+void HttpBridgeFactory::Destroy(HttpPostProviderInterface* http) {
   static_cast<HttpBridge*>(http)->Release();
 }
 
 HttpBridge::RequestContext::RequestContext(
     net::URLRequestContext* baseline_context,
     const scoped_refptr<base::SingleThreadTaskRunner>&
         network_task_runner,
     const std::string& user_agent)
     : baseline_context_(baseline_context),
       network_task_runner_(network_task_runner),
@@ skipping 223 matching lines @@
   // URLFetcher, so it seems most natural / "polite" to let the stack unwind.
   MessageLoop::current()->DeleteSoon(FROM_HERE, fetch_state_.url_poster);
   fetch_state_.url_poster = NULL;
 
   // Wake the blocked syncer thread in MakeSynchronousPost.
   // WARNING: DONT DO ANYTHING AFTER THIS CALL! |this| may be deleted!
   http_post_completed_.Signal();
 }
 
 }  // namespace syncer