Revert of Add GM/slide to simulate Android-style reveal clip

src/effects/SkGaussianEdgeShader.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGaussianEdgeShader.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
@@ skipping 115 matching lines @@
 void SkGaussianEdgeShaderImpl::toString(SkString* str) const {
     str->appendf("GaussianEdgeShader: ()");
 }
 #endif
 
 sk_sp<SkFlattenable> SkGaussianEdgeShaderImpl::CreateProc(SkReadBuffer& buf) {
     return sk_make_sp<SkGaussianEdgeShaderImpl>();
 }
 
 void SkGaussianEdgeShaderImpl::flatten(SkWriteBuffer& buf) const {
+    this->INHERITED::flatten(buf);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 sk_sp<SkShader> SkGaussianEdgeShader::Make() {
     return sk_make_sp<SkGaussianEdgeShaderImpl>();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGaussianEdgeShader)
 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkGaussianEdgeShaderImpl)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
 
 ///////////////////////////////////////////////////////////////////////////////