message: Update Grappler Remapper documentation to include DepthwiseConv2dNative fusion.
diff: @@ -47,10 +47,15 @@ namespace grappler {
  // MatMul + ... -> _FusedMatMul:
  // (1) MatMul + BiasAdd + <Activation>
  //
  +// DepthwiseConv2dNative + ... -> _FusedDepthwiseConv2dNative:
  +// (1) DepthwiseConv2dNative + BiasAdd + <Activation>
  +//
  // FusedBatchNorm[$is_training] + ... -> _FusedBatchNormEx[$is_training]
  // (1) FusedBatchNorm + <Activation>
  // (2) FusedBatchNorm + SideInput + <Activation>
  //
  +// In all cases, the supported activation functions are Relu, Relu6, and Elu.
  +//
  // Both Conv2D and MatMul implemented as Tensor contraction (on CPU), so all the
  // patterns are "ContractionWith...".
  namespace {
  