Fix appinstalled event firing when user opens a WebAPK from banner.

chrome/browser/android/banners/app_banner_infobar_delegate_android.cc

Index: chrome/browser/android/banners/app_banner_infobar_delegate_android.cc
diff --git a/chrome/browser/android/banners/app_banner_infobar_delegate_android.cc b/chrome/browser/android/banners/app_banner_infobar_delegate_android.cc
index 7b7ec20717dc9eed65417dd09ef164b52277dd4d..ba01f68a4821503b130064a253e668a88dfd330a 100644
--- a/chrome/browser/android/banners/app_banner_infobar_delegate_android.cc
+++ b/chrome/browser/android/banners/app_banner_infobar_delegate_android.cc
@@ -303,11 +303,10 @@ bool AppBannerInfoBarDelegateAndroid::AcceptWebApk(
   JNIEnv* env = base::android::AttachCurrentThread();
 
   // If the WebAPK is installed and the "Open" button is clicked, open the
-  // WebAPK.
+  // WebAPK. Do not send a BannerAccepted message.
   if (install_state_ == INSTALLED) {
     Java_AppBannerInfoBarDelegateAndroid_openWebApk(env, java_delegate_);
     webapk::TrackUserAction(webapk::USER_ACTION_INSTALLED_OPEN);
-    SendBannerAccepted();
     return true;
   }