Change SDCHDictionaryFetcher to use URLRequest instead of URLFetcher.

net/base/sdch_manager.h

Index: net/base/sdch_manager.h
diff --git a/net/base/sdch_manager.h b/net/base/sdch_manager.h
index 85633f58488286c9d0da92374f5c9006849ecdc7..9ca3a76e077082b46a2ba6f99a3b90a3a67f0ebf 100644
--- a/net/base/sdch_manager.h
+++ b/net/base/sdch_manager.h
@@ -237,7 +237,7 @@ class NET_EXPORT SdchManager : public NON_EXPORTED_BASE(base::NonThreadSafe) {
   };
 
   SdchManager();
-  ~SdchManager();
+  virtual ~SdchManager();
 
   // Clear data (for browser data removal).
   void ClearData();
@@ -304,8 +304,9 @@ class NET_EXPORT SdchManager : public NON_EXPORTED_BASE(base::NonThreadSafe) {
   // Add an SDCH dictionary to our list of availible dictionaries. This addition
   // will fail (return false) if addition is illegal (data in the dictionary is
   // not acceptable from the dictionary_url; dictionary already added, etc.).
-  bool AddSdchDictionary(const std::string& dictionary_text,
-                         const GURL& dictionary_url);
+  // virtual for testing.
+  virtual bool AddSdchDictionary(const std::string& dictionary_text,
+                                 const GURL& dictionary_url);
 
   // Find the vcdiff dictionary (the body of the sdch dictionary that appears
   // after the meta-data headers like Domain:...) with the given |server_hash|