Why browsers are bloated

https://github.com/WebKit/webkit/blob/master/Source/WebCore/platform/Scrollbar.cpp
https://github.com/WebKit/webkit/blob/master/Source/WebCore/platform/win/ScrollbarThemeWin.cpp
Let's reinvent the fucking scrollbar, which every goddamn platform with a UI already has, and make it behave subtly different from the native one!

Right-click a native scrollbar in some other app:
- Scroll Here
- Top
- Bottom
- Page Up
- Page Down
- Scroll Up
- Scroll Down

Right-click a scrollbar in Chrome:
- Back
- Forward
- Reload
- Save As...
...

Right-click a scrollbar in Firefox and Opera:
Absolutely fucking nothing happens!

What the fuck!? How did these terminally retarded idiots get involved in creating one of the most important pieces of software to the average user?

I think some of your design goals are at odds with each other, Cudder. GDI is ancient shit and it's only going to make your browser harder to port. A D3D or OpenGL renderer would draw significantly faster and allow you to easily render most of the page at once, significantly improving scroll performance (just a blit).

Leaning too heavily on Windows features in general is going to kill any chance of this making waves in the web "developer" community. They're all on OSX and Linux these days.