Refactor net predictor to use ResourceThrottles

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index 58233c9d5ae3fb818e35757c3995b8b2065eeb21..116d98b4a217dbe64893abd4fa89a354ba92011d 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -250,6 +250,10 @@ class ProfileIOData {
   virtual policy::URLBlacklist::URLBlacklistState GetURLBlacklistState(
       const GURL& url) const;
 
+  // Returns the predictor service for this Profile. Returns nullptr if there is
+  // no Predictor, as is the case with OffTheRecord profiles.
+  virtual chrome_browser_net::Predictor* GetPredictor();
+
  protected:
   // A URLRequestContext for media that owns its HTTP factory, to ensure
   // it is deleted.