Modify ScreenCaptureFrameQueue into a template

webrtc/modules/desktop_capture/desktop_and_cursor_composer_unittest.cc

 /*
  *  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.
  */
 
@@ skipping 41 matching lines @@
 uint32_t BlendPixels(uint32_t dest, uint32_t src) {
   uint8_t alpha = 255 - ((src & 0xff000000) >> 24);
   uint32_t r =
       ((dest & 0x00ff0000) >> 16) * alpha / 255 + ((src & 0x00ff0000) >> 16);
   uint32_t g =
       ((dest & 0x0000ff00) >> 8) * alpha / 255 + ((src & 0x0000ff00) >> 8);
   uint32_t b = (dest & 0x000000ff) * alpha / 255 + (src & 0x000000ff);
   return b + (g << 8) + (r << 16) + 0xff000000;
 }
 
-DesktopFrame* CreateTestFrame() {
-  DesktopFrame* frame =
-      new BasicDesktopFrame(DesktopSize(kScreenWidth, kScreenHeight));
+std::unique_ptr<DesktopFrame> CreateTestFrame() {
+  std::unique_ptr<DesktopFrame> frame(
+      new BasicDesktopFrame(DesktopSize(kScreenWidth, kScreenHeight)));
   uint32_t* data = reinterpret_cast<uint32_t*>(frame->data());
   for (int y = 0; y < kScreenHeight; ++y) {
     for (int x = 0; x < kScreenWidth; ++x) {
       *(data++) = GetFakeFramePixelValue(DesktopVector(x, y));
     }
   }
   return frame;
 }
 
 class FakeScreenCapturer : public DesktopCapturer {
@@ skipping 165 matching lines @@
     // Verify that the cursor is erased before the frame buffer is returned to
     // the screen capturer.
     frame_.reset();
     VerifyFrame(*frame, MouseCursorMonitor::OUTSIDE, DesktopVector());
   }
 }
 
 }  // namespace
 
 }  // namespace webrtc