Revert 242936 "When stopping QTKit video capture, call stopRunni..."

trunk/src/media/video/capture/mac/video_capture_device_qtkit_mac.mm

Index: trunk/src/media/video/capture/mac/video_capture_device_qtkit_mac.mm
===================================================================
--- trunk/src/media/video/capture/mac/video_capture_device_qtkit_mac.mm	(revision 243443)
+++ trunk/src/media/video/capture/mac/video_capture_device_qtkit_mac.mm	(working copy)
@@ -219,10 +219,8 @@
 
 - (void)stopCapture {
   if ([[captureSession_ inputs] count] == 1) {
-    // |stopRunning| must be called before |removeInput:| to avoid a deadlock
-    // with device enumeration when the active camera is unplugged.
+    [captureSession_ removeInput:captureDeviceInput_];
     [captureSession_ stopRunning];
-    [captureSession_ removeInput:captureDeviceInput_];
   }
 
   [[NSNotificationCenter defaultCenter] removeObserver:self];