Implement declarativeContent API.

chrome/renderer/extensions/dispatcher.h

Index: chrome/renderer/extensions/dispatcher.h
diff --git a/chrome/renderer/extensions/dispatcher.h b/chrome/renderer/extensions/dispatcher.h
index 2676b3b7b4ad9771f60ba2899fb44e5fd53b060d..d36234c86a470290d47972bee0437f84a62f17e7 100644
--- a/chrome/renderer/extensions/dispatcher.h
+++ b/chrome/renderer/extensions/dispatcher.h
@@ -39,6 +39,7 @@ class RenderThread;
 }
 
 namespace extensions {
+class ContentWatcher;
 class Extension;
 class FilteredEventRouter;
 class RequestSender;
@@ -66,6 +67,9 @@ class Dispatcher : public content::RenderProcessObserver {
   V8SchemaRegistry* v8_schema_registry() {
     return &v8_schema_registry_;
   }
+  ContentWatcher* content_watcher() {
+    return content_watcher_.get();
+  }
 
   bool IsExtensionActive(const std::string& extension_id) const;
 
@@ -221,6 +225,8 @@ class Dispatcher : public content::RenderProcessObserver {
 
   scoped_ptr<UserScriptSlave> user_script_slave_;
 
+  scoped_ptr<ContentWatcher> content_watcher_;
+
   // Same as above, but on a longer timer and will run even if the process is
   // not idle, to ensure that IdleHandle gets called eventually.
   base::RepeatingTimer<content::RenderThread> forced_idle_timer_;