Revert of Stop copying script contents for each RenderFrames.

extensions/renderer/user_script_set.h

Index: extensions/renderer/user_script_set.h
diff --git a/extensions/renderer/user_script_set.h b/extensions/renderer/user_script_set.h
index 44b601826c0e1bb26d21e5e1eb85c1876c8f6c0c..578667871ffe8e4bfbfbf89cd6796a84d29c13b6 100644
--- a/extensions/renderer/user_script_set.h
+++ b/extensions/renderer/user_script_set.h
@@ -5,7 +5,6 @@
 #ifndef EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
 #define EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
 
-#include <map>
 #include <memory>
 #include <set>
 #include <string>
@@ -16,7 +15,6 @@
 #include "base/memory/shared_memory.h"
 #include "base/observer_list.h"
 #include "extensions/common/user_script.h"
-#include "third_party/WebKit/public/platform/WebString.h"
 
 class GURL;
 
@@ -75,12 +73,6 @@
                          const std::set<HostID>& changed_hosts,
                          bool whitelisted_only);
 
-  // Returns the contents of a script file.
-  // Note that copying is cheap as this uses WebString.
-  blink::WebString GetJsSource(const UserScript::File& file,
-                               bool emulate_greasemonkey);
-  blink::WebString GetCssSource(const UserScript::File& file);
-
  private:
   // Returns a new ScriptInjection for the given |script| to execute in the
   // |render_frame|, or NULL if the script should not execute.
@@ -99,9 +91,6 @@
   // The UserScripts this injector manages.
   UserScriptList scripts_;
 
-  // Map of user script file url -> source.
-  std::map<GURL, blink::WebString> script_sources_;
-
   // The associated observers.
   base::ObserverList<Observer> observers_;