Fix some clang warnings with -Wmissing-braces in WebRTC.

webrtc/modules/desktop_capture/desktop_frame_win.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 17 matching lines @@
   DeleteObject(bitmap_);
 }
 
 // static
 DesktopFrameWin* DesktopFrameWin::Create(DesktopSize size,
                                          SharedMemory* shared_memory,
                                          HDC hdc) {
   int bytes_per_row = size.width() * kBytesPerPixel;
 
   // Describe a device independent bitmap (DIB) that is the size of the desktop.
-  BITMAPINFO bmi = {0};
+  BITMAPINFO bmi = {};
   bmi.bmiHeader.biHeight = -size.height();
   bmi.bmiHeader.biWidth = size.width();
   bmi.bmiHeader.biPlanes = 1;
   bmi.bmiHeader.biBitCount = DesktopFrameWin::kBytesPerPixel * 8;
   bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
   bmi.bmiHeader.biSizeImage = bytes_per_row * size.height();
 
   HANDLE section_handle = NULL;
   if (shared_memory)
     section_handle = shared_memory->handle();
   void* data = NULL;
   HBITMAP bitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &data,
                                     section_handle, 0);
   if (!bitmap) {
     LOG(LS_WARNING) << "Failed to allocate new window frame " << GetLastError();
     delete shared_memory;
     return NULL;
   }
 
   return new DesktopFrameWin(size, bytes_per_row,
                              reinterpret_cast<uint8_t*>(data),
                              shared_memory, bitmap);
 }
 
 }  // namespace webrtc