Move string tokenizer to base/strings.

chrome/browser/metrics/thread_watcher_unittest.cc

Index: chrome/browser/metrics/thread_watcher_unittest.cc
diff --git a/chrome/browser/metrics/thread_watcher_unittest.cc b/chrome/browser/metrics/thread_watcher_unittest.cc
index 27d893e18baa4d90516487becc7d5091eae9ba7a..d39e23c0d27772777b2e1c51a146f88044a74e57 100644
--- a/chrome/browser/metrics/thread_watcher_unittest.cc
+++ b/chrome/browser/metrics/thread_watcher_unittest.cc
@@ -12,7 +12,7 @@
 #include "base/message_loop_proxy.h"
 #include "base/string_number_conversions.h"
 #include "base/string_split.h"
-#include "base/string_tokenizer.h"
+#include "base/strings/string_tokenizer.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/platform_thread.h"
@@ -351,7 +351,7 @@ TEST_F(ThreadWatcherTest, CommandLineArgs) {
             atoi(crash_on_hang_seconds.c_str()));
 
   // Check ThreadWatcherTestList has the right crash_on_hang_thread_names.
-  StringTokenizer tokens(crash_on_hang_thread_names, ",");
+  base::StringTokenizer tokens(crash_on_hang_thread_names, ",");
   std::vector<std::string> values;
   while (tokens.GetNext()) {
     const std::string& token = tokens.token();