* 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
NativeWindow::SetParentWindow(parent);
#if defined(USE_X11)
  XDisplay* xdisplay = gfx::GetXDisplay();
  XSetTransientForHint(
      xdisplay, GetAcceleratedWidget(),
      parent ? parent->GetAcceleratedWidget() : DefaultRootWindow(xdisplay));
#elif defined(OS_WIN)
  
  
  
  
  
  
  HWND hwndParent = parent ? parent->GetAcceleratedWidget() : NULL;
  if (hwndParent ==
      (HWND)::GetWindowLongPtr(GetAcceleratedWidget(), GWLP_HWNDPARENT))
    return;
  ::SetWindowLongPtr(GetAcceleratedWidget(), GWLP_HWNDPARENT,
                     (LONG_PTR)hwndParent);
  
  if (IsVisible()) {
    WINDOWPLACEMENT wp;
    wp.length = sizeof(WINDOWPLACEMENT);