Upstream portions of code to WebKit

[kenrussell]

Very nice work porting WebGL to the Android browser.

It would be great to upstream portions of this code to WebKit. For example, some of the checks you've added to WebGLRenderingContext to skip no-op OpenGL calls which are problematic on some implementations would be generally beneficial. Your work on discarding and recreating the WebGL context's surface when the document is activated and deactivated might inform a solution to https://bugs.webkit.org/show_bug.cgi?id=76225 .

Would you consider working with me to land some of these patches upstream? If so please contact me directly at kbr at chromium dot org. Thanks.