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

chrome/browser/web_resource/promo_resource_service.h

Index: chrome/browser/web_resource/promo_resource_service.h
diff --git a/chrome/browser/web_resource/promo_resource_service.h b/chrome/browser/web_resource/promo_resource_service.h
index 733e6aef72f920440623ca7d5d7c9bbeef6f7048..2149890a2823fa34a5886aad93b729088300e3a8 100644
--- a/chrome/browser/web_resource/promo_resource_service.h
+++ b/chrome/browser/web_resource/promo_resource_service.h
@@ -16,6 +16,8 @@ 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
@@ -27,8 +29,61 @@ bool CanShowPromo(Profile* profile);
 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+  // available or be no longer valid.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:
@@ -69,7 +124,6 @@ class PromoResourceService
   // 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
@@ -98,29 +152,44 @@ class PromoResourceService
   //   }
   // }
   //
-  // 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_
-