command_buffer: Implement EXT_blend_func_extended

mojo/gpu/mojo_gles2_impl_autogen.h

Index: mojo/gpu/mojo_gles2_impl_autogen.h
diff --git a/mojo/gpu/mojo_gles2_impl_autogen.h b/mojo/gpu/mojo_gles2_impl_autogen.h
index 8d0b2f18859b7472865692bd5f262696b34f9312..59abd518fddfc4489cb7b7adcd3d3d53475a1e2c 100644
--- a/mojo/gpu/mojo_gles2_impl_autogen.h
+++ b/mojo/gpu/mojo_gles2_impl_autogen.h
@@ -876,6 +876,14 @@ class MojoGLES2Impl : public gpu::gles2::GLES2Interface {
                                            const GLfloat* coeffs) override;
   GLenum GetGraphicsResetStatusKHR() override;
   void BlendBarrierKHR() override;
+  void BindFragDataLocationIndexedEXT(GLuint program,
+                                      GLuint colorNumber,
+                                      GLuint index,
+                                      const char* name) override;
+  void BindFragDataLocationEXT(GLuint program,
+                               GLuint colorNumber,
+                               const char* name) override;
+  GLint GetFragDataIndexEXT(GLuint program, const char* name) override;
 
  private:
   MojoGLES2Context context_;