Pass WebAPK install source to AppBannerInfobarDelegateAndroid constructor.

chrome/browser/android/webapps/add_to_homescreen_manager.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/webapps/add_to_homescreen_manager.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/guid.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/android/banners/app_banner_infobar_delegate_android.h"
 #include "chrome/browser/android/shortcut_helper.h"
 #include "chrome/browser/android/webapk/chrome_webapk_host.h"
+#include "chrome/browser/android/webapk/webapk_metrics.h"
 #include "chrome/browser/banners/app_banner_settings_helper.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/origin_util.h"
 #include "jni/AddToHomescreenManager_jni.h"
 #include "ui/gfx/android/java_bitmap.h"
 
 using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 
@@ skipping 139 matching lines @@
   if (add_shortcut_pending_)
     AddShortcut(info, icon);
 }
 
 void AddToHomescreenManager::CreateInfoBarForWebAPK(const ShortcutInfo& info,
                                                     const SkBitmap& icon) {
   banners::AppBannerInfoBarDelegateAndroid::Create(
       data_fetcher_->web_contents(), nullptr, info.user_title,
       base::MakeUnique<ShortcutInfo>(info), base::MakeUnique<SkBitmap>(icon),
       -1 /* event_request_id */, true /* is_webapk */,
-      true /* start_install_webapk */);
+      webapk::INSTALL_SOURCE_MENU);
 }
 
 SkBitmap AddToHomescreenManager::FinalizeLauncherIconInBackground(
     const SkBitmap& bitmap,
     const GURL& url,
     bool* is_generated) {
   DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
 
   return ShortcutHelper::FinalizeLauncherIconInBackground(bitmap, url,
                                                           is_generated);
 }