Update the web store promo to be clearer and configurable at run-time.

chrome/browser/web_resource/promo_resource_service.h

 // Copyright (c) 2011 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_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_
 #define CHROME_BROWSER_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_
 #pragma once
 
 #include "chrome/browser/web_resource/web_resource_service.h"
 
 namespace PromoResourceServiceUtil {
 
 // Certain promotions should only be shown to certain classes of users. This
 // function will change to reflect each kind of promotion.
 bool CanShowPromo(Profile* profile);
 
 }  // namespace PromoResourceServiceUtil
 
+class PrefService;
+
 // A PromoResourceService fetches data from a web resource server to be used to
 // dynamically change the appearance of the New Tab Page. For example, it has
 // been used to fetch "tips" to be displayed on the NTP, or to display
 // promotional messages to certain groups of Chrome users.
 //
 // TODO(mirandac): Arrange for a server to be set up specifically for promo
 // messages, which have until now been piggybacked onto the old tips server
 // structure. (see http://crbug.com/70634 for details.)
 class PromoResourceService
     : public WebResourceService {
  public:
+  static bool IsBuildTargeted(const std::string& channel, int builds_targeted);
+
+  static void RegisterPrefs(PrefService* local_state);
+
+  static void RegisterUserPrefs(PrefService* prefs);
+
   explicit PromoResourceService(Profile* profile);
 
+  // Default server of dynamically loaded NTP HTML elements.
+  static const char* kDefaultPromoResourceServer;
+
+ private:
+  FRIEND_TEST_ALL_PREFIXES(PromoResourceServiceTest, UnpackLogoSignal);
+  FRIEND_TEST_ALL_PREFIXES(PromoResourceServiceTest, UnpackPromoSignal);
+  FRIEND_TEST_ALL_PREFIXES(PromoResourceServiceTest, UnpackWebStoreSignal);
+
+  // Identifies types of Chrome builds for promo targeting.
+  enum BuildType {
+    NO_BUILD = 0,
+    DEV_BUILD = 1,
+    BETA_BUILD = 1 << 1,
+    STABLE_BUILD = 1 << 2,
+    CANARY_BUILD = 1 << 3,
+  };
+
+  virtual ~PromoResourceService();
+
+  int GetPromoServiceVersion();
+
+  // Gets the locale of the last promos fetched from the server. This is saved
+  // so we can fetch new data if the locale changes.
+  std::string GetPromoLocale();
+
+  void Init();
+
+  // Returns true if |builds_targeted| includes the release channel Chrome
+  // belongs to. For testing purposes, you can override the current channel
+  // with set_channel.
+  bool IsThisBuildTargeted(int builds_targeted);
+
+  // Schedule a notification that a web resource is either going to become
+  // available or be no longer valid.
+  void ScheduleNotification(double ms_start_time, double ms_end_time);
+
+  // Schedules the initial notification for when the web resource is going
+  // to become available or no longer valid. This performs a few additional
+  // checks than ScheduleNotification, namely it schedules updates immediately
+  // if the promo service or Chrome locale has changed.
+  void ScheduleNotificationOnInit();
+
+  // Overrides the current Chrome release channel for testing purposes.
+  void set_channel(const char* channel) { channel_ = channel; }
+
+  virtual void Unpack(const DictionaryValue& parsed_json);
+
   // Unpack the web resource as a custom promo signal. Expects a start and end
   // signal, with the promo to be shown in the tooltip of the start signal
   // field. Delivery will be in json in the form of:
   // {
   //   "topic": {
   //     "answers": [
   //       {
   //         "answer_id": "1067976",
   //         "name": "promo_start",
   //         "question": "1:24",
@@ skipping 20 matching lines @@
   //
   // For "promo_start" or "promo_end", the date to start or stop showing the
   // promotional line is given by the "inproduct" line.
   // For "promo_start", the promotional line itself is given in the "tooltip"
   // field. The "question" field gives the type of builds that should be shown
   // this promo (see the BuildType enum in web_resource_service.cc) and the
   // number of hours that each promo group should see it, separated by ":".
   // For example, "7:24" would indicate that all builds should see the promo,
   // and each group should see it for 24 hours.
   //
-  // Public for unit testing.
   void UnpackPromoSignal(const DictionaryValue& parsed_json);
 
   // Unpack the promo resource as a custom logo signal. Expects a start and end
   // signal. Delivery will be in json in the form of:
   // {
   //   "topic": {
   //     "answers": [
   //       {
   //         "answer_id": "107366",
   //         "name": "custom_logo_start",
   //         "question": "",
   //         "tooltip": "",
   //         "inproduct": "10/8/09 12:00",
   //         "inproduct_target": null
   //       },
   //       {
   //         "answer_id": "107366",
   //         "name": "custom_logo_end",
   //         "question": "",
   //         "tooltip": "",
   //         "inproduct": "10/8/09 12:00",
   //         "inproduct_target": null
   //       },
   //       ...
   //     ]
   //   }
   // }
   //
-  // Public for unit testing.
   void UnpackLogoSignal(const DictionaryValue& parsed_json);
 
-  // Default server of dynamically loaded NTP HTML elements.
-  static const char* kDefaultPromoResourceServer;
-
- private:
-  virtual ~PromoResourceService();
-
-  virtual void Unpack(const DictionaryValue& parsed_json);
-
-  void Init();
-
-  // Schedule a notification that a web resource is either going to become
-  // available or be no longer valid.
-  void ScheduleNotification(double ms_start_time, double ms_end_time);
+  // Unpack the web store promo. Expects JSON delivery in the following format:
+  // {
+  //   "topic": {
+  //     "answers": [
+  //       {
+  //         "answer_id": "1143011",
+  //         "name": "webstore_promo:15",
+  //         "question": "Browse thousands of apps and games for Chrome.",
+  //         "inproduct_target": "Visit the Chrome Web Store",
+  //         "inproduct": "https://chrome.google.com/webstore?hl=en",
+  //         "tooltip": "No thanks, hide this"
+  //       },
+  //       ...
+  //     ]
+  //   }
+  // }
+  // The properties are defined as follows:
+  //   inproduct: the release channels targeted (bitwise or of BuildTypes)
+  //   question: the promo header text
+  //   inproduct_target: the promo button text
+  //   inproduct: the promo button link
+  //   tooltip: the text for the "hide this" link on the promo
+  //   name: starts with "webstore_promo" to identify the signal. the second
+  //         part contains the release channels targeted (bitwise or of
+  //         BuildTypes)
+  //   answer_id: the promo's id
+  void UnpackWebStoreSignal(const DictionaryValue& parsed_json);
 
   // Gets mutable dictionary attached to user's preferences, so that we
   // can write resource data back to user's pref file.
   DictionaryValue* web_resource_cache_;
 
+  // Overrides the current Chrome release channel for testing purposes.
+  const char* channel_;
+
   DISALLOW_COPY_AND_ASSIGN(PromoResourceService);
 };
 
 #endif  // CHROME_BROWSER_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_
-