Bug 576360 WebGLContext::VertexAttribPointer compares WebGLuint stride < 0

r=vlad

--HG--
extra : rebase_source : 640274fe5267a4caa6cf68fb1e0c9dec96fb6fbd

content/canvas/src/WebGLContextGL.cpp

@@ -2975,9 +2975,6 @@ WebGLContext::VertexAttribPointer(WebGLuint index, WebGLint size, WebGLenum type
     if (size < 1 || size > 4)
         return ErrorInvalidValue("VertexAttribPointer: invalid element size");
 
-    if (stride < 0)
-        return ErrorInvalidValue("VertexAttribPointer: stride cannot be negative");
-
     /* XXX make work with bufferSubData & heterogeneous types 
     if (type != mBoundArrayBuffer->GLType())
         return ErrorInvalidOperation("VertexAttribPointer: type must match bound VBO type: %d != %d", type, mBoundArrayBuffer->GLType());