base/testutils.h: Use namespace webrtc::testing instead of plain testing

webrtc/base/httpbase_unittest.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 88 matching lines @@
   void VerifySourceContents(const char* expected_data,
                             size_t expected_length = SIZE_UNKNOWN);
 
   void VerifyTransferComplete(HttpMode mode, HttpError error);
 
   HttpBase base;
   MemoryStream* mem;
   HttpResponseData data;
 
   // The source of http data, and source events
-  testing::StreamSource src;
+  webrtc::testing::StreamSource src;
   std::vector<Event> events;
 
   // Document stream, and stream events
   bool obtain_stream;
   StreamInterface* http_stream;
-  testing::StreamSink sink;
+  webrtc::testing::StreamSink sink;
 };
 
 void HttpBaseTest::SetupSource(const char* http_data) {
   LOG_F(LS_VERBOSE) << "Enter";
 
   src.SetState(SS_OPENING);
   src.QueueString(http_data);
 
   base.notify(this);
   base.attach(&src);
@@ skipping 375 matching lines @@
   base.recv(&data);
 
   // Pull document data
   VerifyDocumentStreamOpenEvent();
   ReadDocumentStreamData("Goodbye!");
 
   // Simulate unexpected close
   src.SetState(SS_CLOSED);
 
   // Observe error event on document stream
-  EXPECT_EQ(testing::SSE_ERROR, sink.Events(http_stream));
+  EXPECT_EQ(webrtc::testing::SSE_ERROR, sink.Events(http_stream));
 
   // Future reads give an error
   int error = 0;
   char buffer[5] = { 0 };
   EXPECT_EQ(SR_ERROR,
             http_stream->Read(buffer, sizeof(buffer), nullptr, &error));
   EXPECT_EQ(HE_DISCONNECTED, error);
 
   // Document completed with error
   VerifyHeaderComplete(2, false);
   VerifyTransferComplete(HM_RECV, HE_DISCONNECTED);
   VerifyDocumentContents("");
 }
 
 } // namespace rtc