Side Panel WebUI Implementation

[Jin Mori]

Hi,

I am trying to use Chromium side panel to display Chromium WebUI component.

I have followed codeflow of showing bookmarks in side panel.

1. Coordinator logic from 

https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/ui/views/side_panel/bookmarks/

2. Creating WebUI from 

https://chromium.googlesource.com/chromium/src/+/main/docs/webui_in_chrome.md

3. I have invoked side panel from context menu.

Still when I creating build, I am getting below error:

undefined symbol: private: virtual void const * __cdecl HelloWorldUI::GetType(void)

>>>referenced by obj/chrome/browser/ui/ui/hello_world.obj: (const HelloWorldUI::`vftable`)

I don't understand the meaning of this error and why am I getting this error.

Please help me here.

Thanks.