* Electron Version: 2.0.0
* Operating System (Platform and Version): Windows 10
* Last known working Electron version: before commit bb5eecc16cff8053c7b04e0b9396803fbbb8c4df

**Expected Behavior**
Width and height of a window should not change while being dragged 

**Actual behavior**
Width and height become smaller.

**To Reproduce**
Create a window with:
  var mainWindow = new BrowserWindow({width: 1024, height: 880, x: 30, y: 30,
            resizable: false })

Then drag the window.  Width and height become smaller than specified (1024, 880)

**Additional Information**
NativeWindowViews::SetBounds calls SetMin/MaxSize(bounds) when resizable_ is false.  bounds get adjusted to smaller  numbers by WindowBoundsToContentBounds.

shell/browser/native_window_views.cc
const content::DesktopMediaID id = content::DesktopMediaID::Parse(sourceId);
  if (id.type != content::DesktopMediaID::TYPE_WINDOW)
    return false;
#if defined(OS_WIN)
  const HWND otherWindow = reinterpret_cast<HWND>(id.id);
  if (!::IsWindow(otherWindow))
    return false;
  gfx::Point pos = GetPosition();
  gfx::Size size = GetSize();
  ::SetWindowPos(GetAcceleratedWidget(), otherWindow, pos.x(), pos.y(),
                 size.width(), size.height(),
                 SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
#elif defined(USE_X11)
  if (!IsWindowValid(id.id))
    return false;
  electron::MoveWindowAbove(GetAcceleratedWidget(), id.id);
#endif
  return true;
}
void NativeWindowViews::MoveTop() {