Stop showing notifications if they're ignored

chrome/browser/android/ntp/content_suggestions_notification_helper.h

 // Copyright 2016 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.
 
 #ifndef CHROME_BROWSER_ANDROID_NTP_CONTENT_SUGGESTIONS_NOTIFICATION_HELPER_H_
 #define CHROME_BROWSER_ANDROID_NTP_CONTENT_SUGGESTIONS_NOTIFICATION_HELPER_H_
 
+#include <jni.h>
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "url/gurl.h"
 
+class Profile;
+
 namespace gfx {
 class Image;
 }  // namespace gfx
 
 namespace ntp_snippets {
 
 class ContentSuggestionsNotificationHelper {
  public:
-  static void OpenURL(const GURL& url);
   static void SendNotification(const GURL& url,
                                const base::string16& title,
                                const base::string16& text,
                                const gfx::Image& image,
                                base::Time timeout_at);
   static void HideAllNotifications();
 
+  // Moves metrics tracked in Java into native histograms. Should be called when
+  // the native library starts up, to capture any actions that were taken since
+  // the last time it was running. (Harmless to call more often, though)
+  //
+  // Also updates the "consecutive ignored" preference, which is computed from
+  // the actions taken on notifications, and maybe the "opt outs" metric, which
+  // is computed in turn from that.
+  static void FlushCachedMetrics();
+
+  // True if the user has ignored enough notifications that we no longer think
+  // that the user is interested in them.
+  static bool IsDisabledForProfile(Profile* profile);
+
+  // Registers JNI methods.
+  static bool Register(JNIEnv* env);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ContentSuggestionsNotificationHelper);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // CHROME_BROWSER_ANDROID_NTP_CONTENT_SUGGESTIONS_NOTIFICATION_HELPER_H_