Update content setting for app banners to store more information.

chrome/browser/android/banners/app_banner_settings_helper.h

 // Copyright 2014 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_BANNERS_APP_BANNER_SETTINGS_HELPER_H_
 #define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_SETTINGS_HELPER_H_
 
 #include <string>
 
 #include "base/macros.h"
+#include "base/time/time.h"
 
 namespace content {
 class WebContents;
 }  // namesapce content
 
 class GURL;
 
 // Utility class for reading and updating ContentSettings for app banners.
 class AppBannerSettingsHelper {
  public:
-  // Checks if a URL is allowed to show a banner for the given package.
+  // Records that a banner could have been shown for the given package or start
+  // url.
+  static void RecordCouldShowBannerEvent(
+      content::WebContents* web_contents,
+      const GURL& origin_url,
+      const std::string& package_name_or_start_url,
+      base::Time time);
+
+  // Checks if a URL is allowed to show a banner for the given package or start
+  // url.
   static bool IsAllowed(content::WebContents* web_contents,
                         const GURL& origin_url,
-                        const std::string& package_name);
+                        const std::string& package_name_or_start_url);
 
-  // Blocks a URL from showing a banner for the given package.
+  // Blocks a URL from showing a banner for the given package or start url.
   static void Block(content::WebContents* web_contents,
                     const GURL& origin_url,
-                    const std::string& package_name);
+                    const std::string& package_name_or_start_url);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppBannerSettingsHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_SETTINGS_HELPER_H_