Add native file picker impl using SelectFileDialog.

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 1e753cadc23babde67b4b7c46e228b8c5429d844..93c7fe8b5902903fd53fd91b047cbe6a1d5e54be 100644
--- a/chrome/browser/ui/intents/web_intent_picker_controller.cc
+++ b/chrome/browser/ui/intents/web_intent_picker_controller.cc
@@ -135,6 +135,48 @@ class SourceWindowObserver : content::WebContentsObserver {
   base::WeakPtr<WebIntentPickerController> controller_;
 };
 
+// A WebIntentsDispatcher wrapper that deletes a itself,
+// and a service once a response is received.

[Greg Billock, 2012/10/10 17:12:51]

I think we can just do this with a closure using RegisterReplyNotification on
the original dispatcher, right?

dispatcher.RegisterReplyNotification(&DeleteService, service);

void DeleteService(IntentServiceHost* service) {
  delete service;
}

[Steve McKay, 2012/10/10 23:12:57]

Done.

+class DeletingDispatcherWrapper : public content::WebIntentsDispatcher {
+ public:
+  explicit DeletingDispatcherWrapper(
+      web_intents::IntentServiceHost* service,
+      content::WebIntentsDispatcher* delegate)
+      : service_(service),
+        delegate_(delegate) {}
+
+  virtual const webkit_glue::WebIntentData& GetIntent() OVERRIDE {
+    return delegate_->GetIntent();
+  }
+
+  virtual void DispatchIntent(content::WebContents* web_contents) OVERRIDE {
+    NOTREACHED();
+  }
+  virtual void ResetDispatch() OVERRIDE {
+    NOTREACHED();
+  }
+
+  virtual void SendReplyMessage(
+      webkit_glue::WebIntentReplyType reply_type,
+      const string16& data) OVERRIDE {
+    delegate_->SendReplyMessage(reply_type, data);
+  }
+
+  virtual void RegisterReplyNotification(
+      const base::Callback<void(webkit_glue::WebIntentReplyType)>&) OVERRIDE {
+    NOTREACHED();
+  }
+
+ private:
+  ~DeletingDispatcherWrapper() {
+    delete service_;
+    delete this;
+  }
+
+  web_intents::IntentServiceHost* service_;
+  content::WebIntentsDispatcher* delegate_;
+};
+
 }  // namespace
 
 // UMAReporter handles reporting Web Intents events to UMA.
@@ -362,9 +404,10 @@ void WebIntentPickerController::OnServiceChosen(
     case webkit_glue::WebIntentServiceData::DISPOSITION_NATIVE: {
       web_intents::IntentServiceHost* service =
           native_services_->CreateServiceInstance(
-              url, intents_dispatcher_->GetIntent());
+              url, intents_dispatcher_->GetIntent(), web_contents_);
       DCHECK(service);
-      service->HandleIntent(intents_dispatcher_);
+      service->HandleIntent(
+          new DeletingDispatcherWrapper(service, intents_dispatcher_));
       break;
     }