Compile rtc_base_objc and rtc_api_objc for Mac

webrtc/modules/video_capture/mac/video_capture_mac.mm

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 26 matching lines @@
 {
 
 // static
 bool CheckOSVersion()
 {
     // Check OSX version
     OSErr err = noErr;
 
     SInt32 version;
 
+// TODO(5478): Update deprecated APIs.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated"
     err = Gestalt(gestaltSystemVersion, &version);
+#pragma clang diagnostic pop
     if (err != noErr)
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
                      "Could not get OS version");
         return false;
     }
 
     if (version < 0x00001040) // Older version than Mac OSX 10.4
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
                      "OS version too old: 0x%x", version);
         return false;
     }
 
     WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVideoCapture, 0,
                  "OS version compatible: 0x%x", version);
 
     return true;
 }
 
 // static
 bool CheckQTVersion()
 {
     // Check OSX version
     OSErr err = noErr;
 
     SInt32 version;
 
+// TODO(5478): Update deprecated APIs.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated"
     err = Gestalt(gestaltQuickTime, &version);
+#pragma clang diagnostic pop
     if (err != noErr)
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
                      "Could not get QuickTime version");
         return false;
     }
 
     if (version < 0x07000000) // QT v. 7.x or newer (QT 5.0.2 0x05020000)
     {
         WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
@@ skipping 175 matching lines @@
 
 }
 
 /**************************************************************************
  *
  *    End Create/Destroy VideoCaptureModule
  *
  ***************************************************************************/
 }  // namespace videocapturemodule
 }  // namespace webrtc