Move targets from src\build_angle.gyp to src\build_angle.gypi

Move targets from src\build_angle.gyp to src\build_angle.gypi

This enables Skia to compile ANGLE
Committed: https://code.google.com/p/angleproject/source/detail?r=1268

[Alok Priyadarshi, 2012-08-30 22:05:18]

What was the problem with .gyp file?

[apatrick1, 2012-08-30 22:23:32]

On 2012/08/30 22:05:18, Alok Priyadarshi wrote:
> What was the problem with .gyp file?

Oops, forgot to cross reference. I was landing this:
https://codereview.appspot.com/6495055/