Change picker model API to allow less notification messages

chrome/browser/ui/intents/web_intent_picker_controller.cc

Index: chrome/browser/ui/intents/web_intent_picker_controller.cc
diff --git a/chrome/browser/ui/intents/web_intent_picker_controller.cc b/chrome/browser/ui/intents/web_intent_picker_controller.cc
index 4a05ab5539066636c6b46a98f5f97f04ec81a09e..4b537de9c8e3098b45aa5c81a49cdef07c42d489 100644
--- a/chrome/browser/ui/intents/web_intent_picker_controller.cc
+++ b/chrome/browser/ui/intents/web_intent_picker_controller.cc
@@ -605,17 +605,19 @@ void WebIntentPickerController::OnCWSIntentServicesAvailable(
     const CWSIntentsRegistry::IntentExtensionList& extensions) {
   ExtensionServiceInterface* extension_service =
       tab_contents_->profile()->GetExtensionService();
+
+  std::vector<WebIntentPickerModel::SuggestedExtension> suggestions;
   for (size_t i = 0; i < extensions.size(); ++i) {
     const CWSIntentsRegistry::IntentExtensionInfo& info = extensions[i];
+
+    // Do not include suggestions for already installed extensions.
     if (extension_service->GetExtensionById(UTF16ToUTF8(info.id),
-                                            true)) {  // Include disabled.
+                                            true)) {
       continue;
     }
 
-    picker_model_->AddSuggestedExtension(
-        info.name,
-        info.id,
-        info.average_rating);
+    suggestions.push_back(WebIntentPickerModel::SuggestedExtension(
+        info.name, info.id, info.average_rating));
 
     pending_async_count_++;
     net::URLFetcher* icon_url_fetcher = net::URLFetcher::Create(
@@ -634,6 +636,8 @@ void WebIntentPickerController::OnCWSIntentServicesAvailable(
     icon_url_fetcher->Start();
   }
 
+  picker_model_->AddSuggestedExtensions(suggestions);
+
   AsyncOperationFinished();
 }