Prepare declarativeContent API for new script injection feature. Added Javascript types and functio…

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index 44b2fd0f96e818a1bf056574ab16224c2ad99ab8..cef6c94f11ab0e24be788b3b8d025d93b93323dc 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -176,7 +176,6 @@ class ChromeNativeHandler : public ObjectBackedNativeHandler {
 
 Dispatcher::Dispatcher(DispatcherDelegate* delegate)
     : delegate_(delegate),
-      content_watcher_(new ContentWatcher()),
       source_map_(&ResourceBundle::GetSharedInstance()),
       v8_schema_registry_(new V8SchemaRegistry),
       is_webkit_initialized_(false),
@@ -339,15 +338,21 @@ void Dispatcher::DidCreateDocumentElement(blink::WebFrame* frame) {
     frame->document().insertStyleSheet(WebString::fromUTF8(stylesheet));
   }
 
-  content_watcher_->DidCreateDocumentElement(frame);
+  for (ContentWatcherMap::iterator it = content_watchers_.begin();
+       it != content_watchers_.end(); ++it) {
+    it->second->DidCreateDocumentElement(frame);
+  }
 }
 
 void Dispatcher::DidMatchCSS(
     blink::WebFrame* frame,
     const blink::WebVector<blink::WebString>& newly_matching_selectors,
     const blink::WebVector<blink::WebString>& stopped_matching_selectors) {
-  content_watcher_->DidMatchCSS(
-      frame, newly_matching_selectors, stopped_matching_selectors);
+  for (ContentWatcherMap::iterator it = content_watchers_.begin();
+       it != content_watchers_.end(); ++it) {
+    it->second->DidMatchCSS(
+        frame, newly_matching_selectors, stopped_matching_selectors);
+  }
 }
 
 void Dispatcher::OnExtensionResponse(int request_id,
@@ -477,9 +482,8 @@ bool Dispatcher::OnControlMessageReceived(const IPC::Message& message) {
   IPC_MESSAGE_HANDLER(ExtensionMsg_UpdateTabSpecificPermissions,
                       OnUpdateTabSpecificPermissions)
   IPC_MESSAGE_HANDLER(ExtensionMsg_UsingWebRequestAPI, OnUsingWebRequestAPI)
-  IPC_MESSAGE_FORWARD(ExtensionMsg_WatchPages,
-                      content_watcher_.get(),
-                      ContentWatcher::OnWatchPages)
+  IPC_MESSAGE_HANDLER(ExtensionMsg_WatchPages,
+                      OnWatchPages)
   IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -786,6 +790,17 @@ void Dispatcher::OnUserScriptsUpdated(
   UpdateActiveExtensions();
 }
 
+void Dispatcher::OnWatchPages(
+    const std::string& event_name,
+    const std::vector<std::string>& css_selectors) {
+  ContentWatcherMap::iterator it = content_watchers_.find(event_name);
+  if (it == content_watchers_.end()) {
+    content_watchers_[event_name] = make_linked_ptr(
+        new ContentWatcher(event_name));
+  }
+  content_watchers_[event_name]->OnWatchPages(css_selectors);
+}
+
 void Dispatcher::UpdateActiveExtensions() {
   std::set<std::string> active_extensions = active_extension_ids_;
   user_script_set_->GetActiveExtensionIds(&active_extensions);