* Electron Version: 2.0.2
* Operating System (Platform and Version): Win10 x64 version 1803
* Last known working Electron version: 1.9.0

**Expected Behavior**
Calling win.setResizable(false) and then win.setResizable(true) should return the window to it's original state. Specifically, it should not change the result of win.isMaximizable().

**Actual behavior**
Calling win.setResizable(false) and then win.setResizable(true) results in the window not being maximizable. The maximize button is disabled and win.isMaximizable returns false.

**To Reproduce**
In any electron application with a window that is resizable, call win.setResizable(false) and then win.setResizable(true). The window will now be impossible to maximize.
atom/browser/native_window_views.cc
if (resizable != resizable_) {
    
    
    if (resizable) {
      SetContentSizeConstraints(old_size_constraints_);
    } else {
      old_size_constraints_ = GetContentSizeConstraints();
      resizable_ = false;
      gfx::Size content_size = GetContentSize();
      SetContentSizeConstraints(
          extensions::SizeConstraints(content_size, content_size));
    }
  }
#if defined(OS_WIN)
  if (has_frame() && thick_frame_)
    FlipWindowStyle(GetAcceleratedWidget(), resizable, WS_THICKFRAME);
#endif
  resizable_ = resizable;
}
#if defined(OS_WIN)
void NativeWindowViews::MoveTop() {
  gfx::Point pos = GetPosition();
  gfx::Size size = GetSize();
  ::SetWindowPos(GetAcceleratedWidget(), HWND_TOP, pos.x(), pos.y(),
                 size.width(), size.height(),
                 SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
}
#endif
bool NativeWindowViews::IsResizable() {