Android: Fire the appinstalled event on WebAPK installation.

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 af60409cd692e10b1b0c721d1e6a42ce6f4d73e4..4b48d40e1932e77c5b708843471ddc7f6343f601 100644
--- a/chrome/browser/banners/app_banner_manager.cc
+++ b/chrome/browser/banners/app_banner_manager.cc
@@ -139,6 +139,10 @@ void AppBannerManager::SendBannerDismissed(int request_id) {
   event_->BannerDismissed();
 }
 
+base::WeakPtr<AppBannerManager> AppBannerManager::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
 AppBannerManager::AppBannerManager(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       SiteEngagementObserver(SiteEngagementService::Get(
@@ -188,10 +192,6 @@ int AppBannerManager::GetMinimumPrimaryIconSizeInPx() {
   return InstallableManager::GetMinimumIconSizeInPx();
 }
 
-base::WeakPtr<AppBannerManager> AppBannerManager::GetWeakPtr() {
-  return weak_factory_.GetWeakPtr();
-}
-
 bool AppBannerManager::IsDebugMode() const {
   return is_debug_mode_ ||
          base::CommandLine::ForCurrentProcess()->HasSwitch(