* Electron version: 1.8.2
* Operating system: macos 10.13.3

Reproducing repo: https://github.com/ibash/electron-webkit-app-drag

Demonstrates a bug where `-webkit-app-region: drag` causes a browser view in front of it to miss click events. Oddly - it does not prevent hover events.

Steps:
1. Clone https://github.com/ibash/electron-webkit-app-drag, `yarn install`, `yarn start`
2. Click "button1"
3. Click "button2"

Expected:

Clicking button1 or button2 pops up an alert: "button clicked!"

Actual:

Only clicking button2 pops up an alert: "button clicked!"

atom/browser/api/atom_api_browser_view.cc
view_->SetAutoResizeFlags(flags);
}
void BrowserView::SetBounds(const gfx::Rect& bounds) {
  view_->SetBounds(bounds);
}
void BrowserView::SetBackgroundColor(const std::string& color_name) {
  view_->SetBackgroundColor(ParseHexColor(color_name));
}
v8::Local<v8::Value> BrowserView::GetWebContents() {
  if (web_contents_.IsEmpty()) {
    return v8::Null(isolate());
  }
  return v8::Local<v8::Value>::New(isolate(), web_contents_);
}
void BrowserView::BuildPrototype(v8::Isolate* isolate,
                                 v8::Local<v8::FunctionTemplate> prototype) {
  prototype->SetClassName(mate::StringToV8(isolate, "BrowserView"));
  mate::ObjectTemplateBuilder(isolate, prototype->PrototypeTemplate())
      .MakeDestroyable()
      .SetMethod("setAutoResize", &BrowserView::SetAutoResize)
      .SetMethod("setBounds", &BrowserView::SetBounds)
      .SetMethod("setBackgroundColor", &BrowserView::SetBackgroundColor)
      .SetProperty("webContents", &BrowserView::GetWebContents)
      .SetProperty("id", &BrowserView::ID);
}
}  
}  
namespace {
using atom::api::BrowserView;
void Initialize(v8::Local<v8::Object> exports,