Move string tokenizer to base/strings.

base/strings/string_tokenizer_unittest.cc

Index: base/strings/string_tokenizer_unittest.cc
diff --git a/base/string_tokenizer_unittest.cc b/base/strings/string_tokenizer_unittest.cc
similarity index 98%
rename from base/string_tokenizer_unittest.cc
rename to base/strings/string_tokenizer_unittest.cc
index 61841f2f6b7b6b37d68aa70b09a707d36c63dabe..d391845328291eb8cfe2ad829be740df0b839006 100644
--- a/base/string_tokenizer_unittest.cc
+++ b/base/strings/string_tokenizer_unittest.cc
@@ -2,12 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/string_tokenizer.h"
+#include "base/strings/string_tokenizer.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 using std::string;
 
+namespace base {
+
 namespace {
 
 TEST(StringTokenizerTest, Simple) {
@@ -228,3 +230,5 @@ TEST(StringTokenizerTest, ParseQuotedString_EscapedQuotes2) {
 }
 
 }  // namespace
+
+}  // namespace base