* 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_win.cc
switch (command_id) {
    case APPCOMMAND_BROWSER_BACKWARD:
      return kBrowserBackward;
    case APPCOMMAND_BROWSER_FORWARD:
      return kBrowserForward;
    case APPCOMMAND_BROWSER_REFRESH:
      return "browser-refresh";
    case APPCOMMAND_BROWSER_STOP:
      return "browser-stop";
    case APPCOMMAND_BROWSER_SEARCH:
      return "browser-search";
    case APPCOMMAND_BROWSER_FAVORITES:
      return "browser-favorites";
    case APPCOMMAND_BROWSER_HOME:
      return "browser-home";
    case APPCOMMAND_VOLUME_MUTE:
      return "volume-mute";
    case APPCOMMAND_VOLUME_DOWN:
      return "volume-down";
    case APPCOMMAND_VOLUME_UP:
      return "volume-up";
    case APPCOMMAND_MEDIA_NEXTTRACK:
      return "media-nexttrack";
    case APPCOMMAND_MEDIA_PREVIOUSTRACK:
      return "media-previoustrack";
    case APPCOMMAND_MEDIA_STOP:
      return "media-stop";