Implement server-suggested update check backoff

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 "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
@@ skipping 356 matching lines @@
     weak_manager_->SendBannerAccepted(event_request_id_);
     // TODO(mgiuca): Send the appinstalled event for WebAPKs (but just removing
     // this check won't be sufficient).
     if (!is_webapk_)
       weak_manager_->OnInstall();
   }
 }
 
 void AppBannerInfoBarDelegateAndroid::OnWebApkInstallFinished(
     bool success,
+    bool relax_updates,
     const std::string& webapk_package_name) {
   if (!success) {
     OnWebApkInstallFailed();
     return;
   }
   UpdateStateForInstalledWebAPK(webapk_package_name);
   webapk::TrackInstallDuration(timer_->Elapsed());
   timer_.reset();
   webapk::TrackInstallEvent(webapk::INSTALL_COMPLETED);
 }
@@ skipping 94 matching lines @@
 
   TrackDismissEvent(DISMISS_EVENT_BANNER_CLICK);
   return true;
 }
 
 bool RegisterAppBannerInfoBarDelegateAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace banners