Convert app banners to use Mojo.

chrome/renderer/chrome_render_frame_observer.h

Index: chrome/renderer/chrome_render_frame_observer.h
diff --git a/chrome/renderer/chrome_render_frame_observer.h b/chrome/renderer/chrome_render_frame_observer.h
index 19bac5baeb74a1889911ebf112e6d8b3002e9a5e..43d19668ea7951a0654d13a60c4c3037e0b9b6b2 100644
--- a/chrome/renderer/chrome_render_frame_observer.h
+++ b/chrome/renderer/chrome_render_frame_observer.h
@@ -5,10 +5,14 @@
 #ifndef CHROME_RENDERER_CHROME_RENDER_FRAME_OBSERVER_H_
 #define CHROME_RENDERER_CHROME_RENDER_FRAME_OBSERVER_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "chrome/common/prerender_types.h"
 #include "content/public/renderer/render_frame_observer.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/WebKit/public/platform/modules/app_banner/app_banner.mojom.h"
 
 class GURL;
 
@@ -26,8 +30,12 @@ class TranslateHelper;
 
 // This class holds the Chrome specific parts of RenderFrame, and has the same
 // lifetime.
-class ChromeRenderFrameObserver : public content::RenderFrameObserver {
+class ChromeRenderFrameObserver : public content::RenderFrameObserver,
+                                  public blink::mojom::AppBannerClient {
  public:
+  static void BindBannerClient(
+      ChromeRenderFrameObserver* observer,
+      mojo::InterfaceRequest<blink::mojom::AppBannerClient> request);
   explicit ChromeRenderFrameObserver(content::RenderFrame* render_frame);
   ~ChromeRenderFrameObserver() override;
 
@@ -52,8 +60,13 @@ class ChromeRenderFrameObserver : public content::RenderFrameObserver {
       int callback_id);
   void OnPrintNodeUnderContextMenu();
   void OnSetClientSidePhishingDetection(bool enable_phishing_detection);
-  void OnAppBannerPromptRequest(int request_id,
-                                const std::string& platform);
+
+  // blink::mojom::AppBannerClient implementation.
+  void BannerPromptRequest(
+      blink::mojom::AppBannerServicePtr banner_service,
+      blink::mojom::AppBannerEventRequest event_request,
+      const std::string& platform,
+      const BannerPromptRequestCallback& callback) override;
 
   // Captures page information using the top (main) frame of a frame tree.
   // Currently, this page information is just the text content of the all
@@ -65,6 +78,8 @@ class ChromeRenderFrameObserver : public content::RenderFrameObserver {
   void CapturePageTextLater(TextCaptureType capture_type,
                             base::TimeDelta delay);
 
+  std::unique_ptr<mojo::Binding<blink::mojom::AppBannerClient>> banner_binding_;
+
   // Have the same lifetime as us.
   translate::TranslateHelper* translate_helper_;
   safe_browsing::PhishingClassifierDelegate* phishing_classifier_;