Use base namespace for string16 in chrome/renderer.

chrome/renderer/safe_browsing/phishing_term_feature_extractor.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // PhishingTermFeatureExtractor handles computing term features from the text
 // of a web page for the client-side phishing detection model.  To do this, it
 // takes a list of terms that appear in the model, and scans through the page
 // text looking for them.  Any terms that appear will cause a corresponding
 // features::kPageTerm feature to be added to the FeatureMap.
 //
@@ skipping 52 matching lines @@
   //
   // To avoid blocking the render thread for too long, the feature extractor
   // may run in several chunks of work, posting a task to the current
   // MessageLoop to continue processing.  Once feature extraction is complete,
   // |done_callback| is run on the current thread.
   // PhishingTermFeatureExtractor takes ownership of the callback.
   //
   // |page_text| and |features| are owned by the caller, and must not be
   // destroyed until either |done_callback| is run or
   // CancelPendingExtraction() is called.
-  void ExtractFeatures(const string16* page_text,
+  void ExtractFeatures(const base::string16* page_text,
                        FeatureMap* features,
                        const DoneCallback& done_callback);
 
   // Cancels any pending feature extraction.  The DoneCallback will not be run.
   // Must be called if there is a feature extraction in progress when the page
   // is unloaded or the PhishingTermFeatureExtractor is destroyed.
   void CancelPendingExtraction();
 
  private:
   struct ExtractionState;
@@ skipping 55 matching lines @@
   // converting to UTF8, lowercasing, and hashing are all relatively expensive
   // operations. Though this is called an MRU cache, it seems to behave like
   // an LRU cache (i.e. it evicts the oldest accesses first).
   typedef base::HashingMRUCache<base::StringPiece16, bool> WordCache;
   WordCache negative_word_cache_;
 
   // Non-owned pointer to our clock.
   FeatureExtractorClock* clock_;
 
   // The output parameters from the most recent call to ExtractFeatures().
-  const string16* page_text_;  // The caller keeps ownership of this.
+  const base::string16* page_text_;  // The caller keeps ownership of this.
   FeatureMap* features_;  // The caller keeps ownership of this.
   DoneCallback done_callback_;
 
   // Stores the current state of term extraction from |page_text_|.
   scoped_ptr<ExtractionState> state_;
 
   // Used in scheduling ExtractFeaturesWithTimeout tasks.
   // These pointers are invalidated if extraction is cancelled.
   base::WeakPtrFactory<PhishingTermFeatureExtractor> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PhishingTermFeatureExtractor);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_RENDERER_SAFE_BROWSING_PHISHING_TERM_FEATURE_EXTRACTOR_H_