Cleanup shared memory handling in DesktopCapturer interface.

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 150 matching lines @@
 class DesktopAndCursorComposerTest : public testing::Test,
                                      public DesktopCapturer::Callback {
  public:
   DesktopAndCursorComposerTest()
       : fake_screen_(new FakeScreenCapturer()),
         fake_cursor_(new FakeMouseMonitor()),
         blender_(fake_screen_, fake_cursor_) {
   }
 
   // DesktopCapturer::Callback interface
-  SharedMemory* CreateSharedMemory(size_t size) override { return NULL; }
-
   void OnCaptureCompleted(DesktopFrame* frame) override { frame_.reset(frame); }
 
  protected:
   // Owned by |blender_|.
   FakeScreenCapturer* fake_screen_;
   FakeMouseMonitor* fake_cursor_;
 
   DesktopAndCursorComposer blender_;
   rtc::scoped_ptr<DesktopFrame> frame_;
 };
@@ skipping 58 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