Add initial support for NV_path_rendering extension to gpu command buffer

ppapi/c/ppb_opengles2.h

Index: ppapi/c/ppb_opengles2.h
diff --git a/ppapi/c/ppb_opengles2.h b/ppapi/c/ppb_opengles2.h
index 7f876e199ffceedf5f9f8758a62564627e14653a..4b7ec57636d34268c0e8da495389513274da88bf 100644
--- a/ppapi/c/ppb_opengles2.h
+++ b/ppapi/c/ppb_opengles2.h
@@ -499,6 +499,7 @@ struct PPB_OpenGLES2 {
                    GLint y,
                    GLsizei width,
                    GLsizei height);
+  void (*LoadIdentity)(PP_Resource context);

[vmiura, 2014/04/11 21:54:48]

Should the other APIs also be added here?

void glMatrixMode(GLenum mode) 
void glLoadMatrixf(const GLfloat* m) 

[piman, 2014/04/11 22:19:27]

Actually, we shouldn't change this interface, otherwise we can break existing
plugins. If we want to expose these as extensions, they need to be described as
such, like below.

[vmiura, 2014/04/11 22:49:50]

Right.  Please follow @jbauman's comment to remove LoadIdentity from ppapi.

[Kimmo Kinnunen, 2014/04/15 16:16:58]

Done.

 };
 
 #define PPB_OPENGLES2_INSTANCEDARRAYS_INTERFACE_1_0 \