Reland of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm

Index: webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm b/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
new file mode 100644
index 0000000000000000000000000000000000000000..7e8aea62955dd61e20f3208150c780a99547ca4b
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "RTCUIApplication.h"
+
+#if defined(WEBRTC_IOS)
+
+#import <UIKit/UIKit.h>
+
+bool RTCIsUIApplicationActive() {
+  UIApplicationState state = [UIApplication sharedApplication].applicationState;
+  return state == UIApplicationStateActive;
+}
+
+#endif // WEBRTC_IOS