Upstream Chrome on iOS source code [1/11].

ios/chrome/app/application_delegate/background_activity.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 IOS_CHROME_APP_APPLICATION_DELEGATE_BACKGROUND_ACTIVITY_H_
+#define IOS_CHROME_APP_APPLICATION_DELEGATE_BACKGROUND_ACTIVITY_H_
+
+#import <UIKit/UIKit.h>
+
+@protocol BrowserLauncher;
+@class MetricsMediator;
+
+// Handles the data-related methods of the ApplicationDelegate. This class has
+// only class methods and should not be instantiated.
+@interface BackgroundActivity : NSObject
+
+// Class methods only.
+- (instancetype)init NS_UNAVAILABLE;
+
+// Handler for the application delegate |performFetchWithCompletionHandler|
+// message. Sends the next breakpad report if available and the user permits it.
++ (void)application:(UIApplication*)application
+    performFetchWithCompletionHandler:
+        (void (^)(UIBackgroundFetchResult))completionHandler
+                      metricsMediator:(MetricsMediator*)metricsMediator
+                      browserLauncher:(id<BrowserLauncher>)browserLauncher;
+
+// Handles Events for Background.
++ (void)handleEventsForBackgroundURLSession:(NSString*)identifier
+                          completionHandler:(void (^)(void))completionHandler
+                            browserLauncher:
+                                (id<BrowserLauncher>)browserLauncher;
+
+// Once the application is in foreground, reset last fetch in background time in
+// NSUserDefaults.
++ (void)foregroundStarted;
+@end
+
+#endif  // IOS_CHROME_APP_APPLICATION_DELEGATE_BACKGROUND_ACTIVITY_H_