[Extensions] Add renderer-side logic to short circuit activity logging

extensions/renderer/user_script_set.h

 // Copyright 2014 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.
 
 #ifndef EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
 #define EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 36 matching lines @@
   // Appends the ids of the extensions that have user scripts to |ids|.
   void GetActiveExtensionIds(std::set<std::string>* ids) const;
 
   // Append any ScriptInjections that should run on the given |render_frame| and
   // |tab_id|, at the given |run_location|, to |injections|.
   // |extensions| is passed in to verify the corresponding extension is still
   // valid.
   void GetInjections(std::vector<std::unique_ptr<ScriptInjection>>* injections,
                      content::RenderFrame* render_frame,
                      int tab_id,
-                     UserScript::RunLocation run_location);
+                     UserScript::RunLocation run_location,
+                     bool log_activity);
 
   std::unique_ptr<ScriptInjection> GetDeclarativeScriptInjection(
       int script_id,
       content::RenderFrame* render_frame,
       int tab_id,
       UserScript::RunLocation run_location,
-      const GURL& document_url);
+      const GURL& document_url,
+      bool log_activity);
 
   // Updates scripts given the shared memory region containing user scripts.
   // Returns true if the scripts were successfully updated.
   bool UpdateUserScripts(base::SharedMemoryHandle shared_memory,
                          const std::set<HostID>& changed_hosts,
                          bool whitelisted_only);
 
   const std::vector<UserScript*>& scripts() const { return scripts_.get(); }
 
  private:
   // Returns a new ScriptInjection for the given |script| to execute in the
   // |render_frame|, or NULL if the script should not execute.
   std::unique_ptr<ScriptInjection> GetInjectionForScript(
       const UserScript* script,
       content::RenderFrame* render_frame,
       int tab_id,
       UserScript::RunLocation run_location,
       const GURL& document_url,
-      bool is_declarative);
+      bool is_declarative,
+      bool log_activity);
 
   // Shared memory containing raw script data.
   std::unique_ptr<base::SharedMemory> shared_memory_;
 
   // The UserScripts this injector manages.
   ScopedVector<UserScript> scripts_;
 
   // The associated observers.
   base::ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(UserScriptSet);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_