Revert of Don't use barcodes in ProtocolPerfTests

remoting/test/frame_generator_util.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_TEST_FRAME_GENERATOR_UTIL_H_
 #define REMOTING_TEST_FRAME_GENERATOR_UTIL_H_
 
 #include <memory>
 
 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
 
 namespace webrtc {
 class DesktopFrame;
 }  // namespace webrtc
 
 namespace remoting {
 namespace test {
 
 // Loads test image from remoting/test/data.
 std::unique_ptr<webrtc::DesktopFrame> LoadDesktopFrameFromPng(const char* name);
 
 // Draws rectangle filled with the given |color|.
 void DrawRect(webrtc::DesktopFrame* frame,
               webrtc::DesktopRect rect,
               uint32_t color);
 
+// Draws barcode that encodes |value| on the |frame|. If |changed| is true then
+// frame->updated_region() will be updated as well.
+void DrawBarcode(int value, bool changed, webrtc::DesktopFrame* frame);
+
+// Reads barcode from the frame.
+int ReadBarcode(const webrtc::DesktopFrame& frame);
+
 }  // namespace test
 }  // namespace remoting
 
 #endif  // REMOTING_TEST_FRAME_GENERATOR_UTIL_H_