Simplify flattening to just write enough to call the factory

src/core/SkLocalMatrixShader.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLocalMatrixShader.h"
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
 SkLocalMatrixShader::SkLocalMatrixShader(SkReadBuffer& buffer) : INHERITED(buffer) {
     if (buffer.isVersionLT(SkReadBuffer::kSimplifyLocalMatrix_Version)) {
         buffer.readMatrix(&(INHERITED::fLocalMatrix));
     }
     fProxyShader.reset(buffer.readShader());
     if (NULL == fProxyShader.get()) {
         sk_throw();
     }
 }
+#endif
+
+SkFlattenable* SkLocalMatrixShader::CreateProc(SkReadBuffer& buffer) {
+    SkMatrix lm;
+    buffer.readMatrix(&lm);
+    SkAutoTUnref<SkShader> shader(buffer.readShader());
+    if (!shader.get()) {
+        return NULL;
+    }
+    return SkShader::CreateLocalMatrixShader(shader, lm);
+}
 
 void SkLocalMatrixShader::flatten(SkWriteBuffer& buffer) const {
-    this->INHERITED::flatten(buffer);
+    buffer.writeMatrix(this->getLocalMatrix());
     buffer.writeFlattenable(fProxyShader.get());
 }
 
 SkShader::Context* SkLocalMatrixShader::onCreateContext(const ContextRec& rec,
                                                         void* storage) const {
     ContextRec newRec(rec);
     SkMatrix tmp;
     if (rec.fLocalMatrix) {
         tmp.setConcat(*rec.fLocalMatrix, this->getLocalMatrix());
         newRec.fLocalMatrix = &tmp;
@@ skipping 25 matching lines @@
     SkMatrix otherLocalMatrix;
     SkAutoTUnref<SkShader> otherProxy(proxy->refAsALocalMatrixShader(&otherLocalMatrix));
     if (otherProxy.get()) {
         otherLocalMatrix.preConcat(localMatrix);
         lm = &otherLocalMatrix;
         proxy = otherProxy.get();
     }
 
     return SkNEW_ARGS(SkLocalMatrixShader, (proxy, *lm));
 }