Use base namespace for string16 in chrome/renderer.

chrome/renderer/safe_browsing/phishing_classifier.h

Index: chrome/renderer/safe_browsing/phishing_classifier.h
diff --git a/chrome/renderer/safe_browsing/phishing_classifier.h b/chrome/renderer/safe_browsing/phishing_classifier.h
index 53dc2300b80ad9d536166046dee9969804eaadb3..66e59695e4eb66d93af52ea5716174632d80acc2 100644
--- a/chrome/renderer/safe_browsing/phishing_classifier.h
+++ b/chrome/renderer/safe_browsing/phishing_classifier.h
@@ -83,7 +83,7 @@ class PhishingClassifier {
   //
   // It is an error to call BeginClassification if the classifier is not yet
   // ready.
-  virtual void BeginClassification(const string16* page_text,
+  virtual void BeginClassification(const base::string16* page_text,
                                    const DoneCallback& callback);
 
   // Called by the RenderView (on the render thread) when a page is unloading
@@ -135,7 +135,7 @@ class PhishingClassifier {
 
   // State for any in-progress extraction.
   scoped_ptr<FeatureMap> features_;
-  const string16* page_text_;  // owned by the caller
+  const base::string16* page_text_;  // owned by the caller
   DoneCallback done_callback_;
 
   // Used in scheduling BeginFeatureExtraction tasks.