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

chrome/browser/android/banners/app_banner_infobar_delegate_android.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/banners/app_banner_infobar_delegate_android.h"
 
 #include <utility>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 285 matching lines @@
 }
 
 bool AppBannerInfoBarDelegateAndroid::AcceptWebApk(
     content::WebContents* web_contents) {
   if (IsInfoEmpty(shortcut_info_))
     return true;
 
   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;
   }
 
   install_state_ = INSTALLING;
   webapk::TrackInstallSource(webapk_install_source_);
 
   if (TriggeredFromBanner()) {
     TrackUserResponse(USER_RESPONSE_WEB_APP_ACCEPTED);
     AppBannerSettingsHelper::RecordBannerInstallEvent(
         web_contents, shortcut_info_->url.spec(), AppBannerSettingsHelper::WEB);
@@ skipping 147 matching lines @@
 
   TrackDismissEvent(DISMISS_EVENT_BANNER_CLICK);
   return true;
 }
 
 bool RegisterAppBannerInfoBarDelegateAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace banners