Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

sdk/objc/Framework/Headers/WebRTC/RTCAVFoundationVideoSource.h

@@ -0,0 +1,55 @@
+/*
+ *  Copyright 2015 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.
+ */
+
+#import <WebRTC/RTCMacros.h>
+#import <WebRTC/RTCVideoSource.h>
+
+@class AVCaptureSession;
+@class RTCMediaConstraints;
+@class RTCPeerConnectionFactory;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * DEPRECATED Use RTCCameraVideoCapturer instead.
+ *
+ * RTCAVFoundationVideoSource is a video source that uses
+ * webrtc::AVFoundationVideoCapturer. We do not currently provide a wrapper for
+ * that capturer because cricket::VideoCapturer is not ref counted and we cannot
+ * guarantee its lifetime. Instead, we expose its properties through the ref
+ * counted video source interface.
+ */
+RTC_EXPORT
+@interface RTCAVFoundationVideoSource : RTCVideoSource
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Calling this function will cause frames to be scaled down to the
+ * requested resolution. Also, frames will be cropped to match the
+ * requested aspect ratio, and frames will be dropped to match the
+ * requested fps. The requested aspect ratio is orientation agnostic and
+ * will be adjusted to maintain the input orientation, so it doesn't
+ * matter if e.g. 1280x720 or 720x1280 is requested.
+ */
+- (void)adaptOutputFormatToWidth:(int)width height:(int)height fps:(int)fps;
+
+/** Returns whether rear-facing camera is available for use. */
+@property(nonatomic, readonly) BOOL canUseBackCamera;
+
+/** Switches the camera being used (either front or back). */
+@property(nonatomic, assign) BOOL useBackCamera;
+
+/** Returns the active capture session. */
+@property(nonatomic, readonly) AVCaptureSession *captureSession;
+
+@end
+
+NS_ASSUME_NONNULL_END