Misc cleanup in net/spdy/core.

net/spdy/core/spdy_no_op_visitor.cc

 // Copyright (c) 2016 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 "net/spdy/core/spdy_no_op_visitor.h"
 
 #include <type_traits>
 
 namespace net {
 namespace test {
 
 SpdyNoOpVisitor::SpdyNoOpVisitor() {
   static_assert(std::is_abstract<SpdyNoOpVisitor>::value == false,
                 "Need to update SpdyNoOpVisitor.");
 }
 SpdyNoOpVisitor::~SpdyNoOpVisitor() {}
 
-net::SpdyHeadersHandlerInterface* SpdyNoOpVisitor::OnHeaderFrameStart(
+SpdyHeadersHandlerInterface* SpdyNoOpVisitor::OnHeaderFrameStart(
     SpdyStreamId stream_id) {
   return this;
 }
 
 bool SpdyNoOpVisitor::OnUnknownFrame(SpdyStreamId stream_id,
                                      uint8_t frame_type) {
   return true;
 }
 
 }  // namespace test
 }  // namespace net