Remove using namespace in net/quic/quic_stream_sequencer.h

components/component_updater/test/update_checker_unittest.cc

Index: components/component_updater/test/update_checker_unittest.cc
diff --git a/components/component_updater/test/update_checker_unittest.cc b/components/component_updater/test/update_checker_unittest.cc
index cb6fa5d8ec0f244e33c96a15f543ba1688481184..2372a73936577ca402d8cf47660f62f8fd6af546 100644
--- a/components/component_updater/test/update_checker_unittest.cc
+++ b/components/component_updater/test/update_checker_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <string>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
@@ -182,16 +184,16 @@ TEST_F(UpdateCheckerTest, UpdateCheckSuccess) {
 
   // Sanity check the request.
   EXPECT_NE(
-      string::npos,
+      std::string::npos,
       post_interceptor_->GetRequests()[0].find(
           "request protocol=\"3.0\" extra=\"params\""));
   EXPECT_NE(
-      string::npos,
+      std::string::npos,
       post_interceptor_->GetRequests()[0].find(
           "app appid=\"jebgalgnebhfojomionfpkfelancnnkf\" version=\"0.9\">"
           "<updatecheck /><packages><package fp=\"fp1\"/></packages></app>"));
 
-  EXPECT_NE(string::npos,
+  EXPECT_NE(std::string::npos,
             post_interceptor_->GetRequests()[0].find("<hw physmemory="));
 
   // Sanity check the arguments of the callback after parsing.