Implement GetJobResponse and merge JobData into DataManager.

content/browser/background_fetch/background_fetch_job_info.h

Index: content/browser/background_fetch/background_fetch_job_info.h
diff --git a/content/browser/background_fetch/background_fetch_job_info.h b/content/browser/background_fetch/background_fetch_job_info.h
index aba5bd8fa89a22e4590e3e88890c6b2cc35aede1..5c5d85ef142d756825a0b4238e4f3e107c61add4 100644
--- a/content/browser/background_fetch/background_fetch_job_info.h
+++ b/content/browser/background_fetch/background_fetch_job_info.h
@@ -5,9 +5,11 @@
 #ifndef CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_JOB_INFO_H
 #define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_JOB_INFO_H
 
+#include <memory>
 #include <string>
 #include <vector>
 
+#include "base/containers/flat_set.h"
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
@@ -15,6 +17,9 @@
 
 namespace content {
 
+class BackgroundFetchJobResponseData;
+class BackgroundFetchRequestInfo;
+
 // Class to encapsulate a batch of FetchRequests into a single grouping which is
 // what the developer requested.
 class CONTENT_EXPORT BackgroundFetchJobInfo {
@@ -35,6 +40,26 @@ class CONTENT_EXPORT BackgroundFetchJobInfo {
     return request_guids_;
   }
 
+  // The |job_response_data| holds information to build a response object to
+  // return to the Mojo service.
+  void set_job_response_data(
+      std::unique_ptr<BackgroundFetchJobResponseData> job_response_data);
+  BackgroundFetchJobResponseData* job_response_data() const {
+    return job_response_data_.get();
+  }
+
+  // The following methods are used to track currently in progress requests.
+  void set_num_requests(size_t num_requests) { num_requests_ = num_requests; }
+  size_t num_requests() const { return num_requests_; }
+  bool IsComplete() const;
+  bool HasRequestsRemaining() const;
+  size_t next_request_index() const { return next_request_index_; }
+
+  void AddActiveRequest(std::unique_ptr<BackgroundFetchRequestInfo> request);
+  BackgroundFetchRequestInfo* GetActiveRequest(
+      const std::string& request_guid) const;
+  void RemoveActiveRequest(const std::string& request_guid);
+
  private:
   std::string guid_;
   std::string tag_;
@@ -42,11 +67,20 @@ class CONTENT_EXPORT BackgroundFetchJobInfo {
   int64_t service_worker_registration_id_ = kInvalidServiceWorkerRegistrationId;
   std::vector<std::string> request_guids_;
 
+  // Tracking information for currently executing requests.
+  base::flat_set<std::unique_ptr<BackgroundFetchRequestInfo>> active_requests_;
+  size_t num_requests_ = INT_MAX;
+  size_t next_request_index_ = 0;
+
   // TODO(harkness): Other things this class should track: estimated download
   // size, current download size, total number of files, number of complete
   // files, (possibly) data to show the notification, (possibly) list of in
   // progress FetchRequests.
 
+  // This value will be non-null only when the job is complete and the response
+  // to the caller is being assembled.
+  std::unique_ptr<BackgroundFetchJobResponseData> job_response_data_;
+
   DISALLOW_COPY_AND_ASSIGN(BackgroundFetchJobInfo);
 };