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diff --git a/third_party/libwebrtc/test/mac/video_renderer_mac.mm b/third_party/libwebrtc/test/mac/video_renderer_mac.mm
new file mode 100644
index 0000000000..7103375383
--- /dev/null
+++ b/third_party/libwebrtc/test/mac/video_renderer_mac.mm
@@ -0,0 +1,127 @@
+/*
+ *  Copyright (c) 2013 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 "test/mac/video_renderer_mac.h"
+
+#import <Cocoa/Cocoa.h>
+
+// Creates a Cocoa Window with an OpenGL context, used together with an OpenGL
+// renderer.
+@interface CocoaWindow : NSObject {
+ @private
+  NSWindow *window_;
+  NSOpenGLContext *context_;
+  NSString *title_;
+  int width_;
+  int height_;
+}
+
+- (id)initWithTitle:(NSString *)title width:(int)width height:(int)height;
+// 'createWindow' must be called on the main thread.
+- (void)createWindow:(NSObject *)ignored;
+- (void)makeCurrentContext;
+
+@end
+
+@implementation CocoaWindow
+  static NSInteger nextXOrigin_;
+  static NSInteger nextYOrigin_;
+
+- (id)initWithTitle:(NSString *)title width:(int)width height:(int)height {
+  if (self = [super init]) {
+    title_ = title;
+    width_ = width;
+    height_ = height;
+  }
+  return self;
+}
+
+- (void)createWindow:(NSObject *)ignored {
+  NSInteger xOrigin = nextXOrigin_;
+  NSRect screenFrame = [[NSScreen mainScreen] frame];
+  if (nextXOrigin_ + width_ < screenFrame.size.width) {
+    nextXOrigin_ += width_;
+  } else {
+    xOrigin = 0;
+    nextXOrigin_ = 0;
+    nextYOrigin_ += height_;
+  }
+  if (nextYOrigin_ + height_ > screenFrame.size.height) {
+    xOrigin = 0;
+    nextXOrigin_ = 0;
+    nextYOrigin_ = 0;
+  }
+  NSInteger yOrigin = nextYOrigin_;
+  NSRect windowFrame = NSMakeRect(xOrigin, yOrigin, width_, height_);
+  window_ = [[NSWindow alloc] initWithContentRect:windowFrame
+                                        styleMask:NSWindowStyleMaskTitled
+                                          backing:NSBackingStoreBuffered
+                                            defer:NO];
+
+  NSRect viewFrame = NSMakeRect(0, 0, width_, height_);
+  NSOpenGLView *view = [[NSOpenGLView alloc] initWithFrame:viewFrame pixelFormat:nil];
+  context_ = [view openGLContext];
+
+  [[window_ contentView] addSubview:view];
+  [window_ setTitle:title_];
+  [window_ makeKeyAndOrderFront:NSApp];
+}
+
+- (void)makeCurrentContext {
+  [context_ makeCurrentContext];
+}
+
+@end
+
+namespace webrtc {
+namespace test {
+
+VideoRenderer* VideoRenderer::CreatePlatformRenderer(const char* window_title,
+                                                     size_t width,
+                                                     size_t height) {
+  MacRenderer* renderer = new MacRenderer();
+  if (!renderer->Init(window_title, width, height)) {
+    delete renderer;
+    return NULL;
+  }
+  return renderer;
+}
+
+MacRenderer::MacRenderer()
+    : window_(NULL) {}
+
+MacRenderer::~MacRenderer() {
+  GlRenderer::Destroy();
+}
+
+bool MacRenderer::Init(const char* window_title, int width, int height) {
+  window_ = [[CocoaWindow alloc]
+      initWithTitle:[NSString stringWithUTF8String:window_title]
+                                             width:width
+                                            height:height];
+  if (!window_)
+    return false;
+  [window_ performSelectorOnMainThread:@selector(createWindow:)
+                            withObject:nil
+                         waitUntilDone:YES];
+
+  [window_ makeCurrentContext];
+  GlRenderer::Init();
+  GlRenderer::ResizeViewport(width, height);
+  return true;
+}
+
+void MacRenderer::OnFrame(const VideoFrame& frame) {
+  [window_ makeCurrentContext];
+  GlRenderer::OnFrame(frame);
+}
+
+}  // test
+}  // webrtc