Implement "appinstalled" event on Android.

chrome/browser/banners/app_banner_manager.cc

Index: chrome/browser/banners/app_banner_manager.cc
diff --git a/chrome/browser/banners/app_banner_manager.cc b/chrome/browser/banners/app_banner_manager.cc
index a46c9dd012bfe2d0e632f0e29f8051c6811b7250..b7aefcffad05424149e1b9c498428c031181a3ff 100644
--- a/chrome/browser/banners/app_banner_manager.cc
+++ b/chrome/browser/banners/app_banner_manager.cc
@@ -23,6 +23,8 @@
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/origin_util.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "services/shell/public/cpp/interface_provider.h"
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerPromptReply.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/display/display.h"
@@ -134,6 +136,15 @@ void AppBannerManager::RequestAppBanner(const GURL& validated_url,
       base::Bind(&AppBannerManager::OnDidGetManifest, GetWeakPtr()));
 }
 
+void AppBannerManager::OnInstall() {
+  if (!installation_service_) {
+    web_contents()->GetMainFrame()->GetRemoteInterfaces()->GetInterface(
+        mojo::GetProxy(&installation_service_));
+    DCHECK(installation_service_);
+  }
+  installation_service_->OnInstall();
+}
+
 base::Closure AppBannerManager::FetchWebappSplashScreenImageCallback(
     const std::string& webapp_id) {
   return base::Closure();