base: Move SplitStringDontTrim functions from string_util.h to string_split.h

chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc

Index: chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc
diff --git a/chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc b/chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc
index 7937cea17d5d2dee7066e0bd3510d57ed03221d2..4686a410dfddbfa16e0945942174dddf4c052421 100644
--- a/chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc
+++ b/chrome/renderer/safe_browsing/phishing_url_feature_extractor.cc
@@ -7,9 +7,11 @@
 #include <algorithm>
 #include <string>
 #include <vector>
+
 #include "base/histogram.h"
 #include "base/logging.h"
 #include "base/perftimer.h"
+#include "base/string_split.h"
 #include "base/string_util.h"
 #include "chrome/renderer/safe_browsing/features.h"
 #include "googleurl/src/gurl.h"
@@ -54,7 +56,7 @@ bool PhishingUrlFeatureExtractor::ExtractFeatures(const GURL& url,
     // Pull off the TLD and the preceeding dot.
     host.erase(tld_start - 1);
     std::vector<std::string> host_tokens;
-    SplitStringDontTrim(host, '.', &host_tokens);
+    base::SplitStringDontTrim(host, '.', &host_tokens);
     // Get rid of any empty components.
     std::vector<std::string>::iterator new_end =
         std::remove(host_tokens.begin(), host_tokens.end(), "");