Move PathExists to base namespace.

content/test/webrtc_audio_device_test.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 "content/test/webrtc_audio_device_test.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
@@ skipping 324 matching lines @@
     // If we do, we will crash the test process.
     ADD_FAILURE() << "Failed to wait for message loop";
   }
 }
 
 std::string WebRTCAudioDeviceTest::GetTestDataPath(
     const base::FilePath::StringType& file_name) {
   base::FilePath path;
   EXPECT_TRUE(PathService::Get(DIR_TEST_DATA, &path));
   path = path.Append(file_name);
-  EXPECT_TRUE(file_util::PathExists(path));
+  EXPECT_TRUE(base::PathExists(path));
 #if defined(OS_WIN)
   return WideToUTF8(path.value());
 #else
   return path.value();
 #endif
 }
 
 WebRTCTransportImpl::WebRTCTransportImpl(webrtc::VoENetwork* network)
     : network_(network) {
 }
 
 WebRTCTransportImpl::~WebRTCTransportImpl() {}
 
 int WebRTCTransportImpl::SendPacket(int channel, const void* data, int len) {
   return network_->ReceivedRTPPacket(channel, data, len);
 }
 
 int WebRTCTransportImpl::SendRTCPPacket(int channel, const void* data,
                                         int len) {
   return network_->ReceivedRTCPPacket(channel, data, len);
 }
 
 }  // namespace content