Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkMagnifierImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkMagnifierImageFilter.h"
 #include "SkColorPriv.h"
@@ skipping 217 matching lines @@
 void GrMagnifierEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     this->updateInvariantOutputForModulation(inout);
 }
 
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
 
 SkImageFilter* SkMagnifierImageFilter::Create(const SkRect& srcRect, SkScalar inset,
                                               SkImageFilter* input) {
-
+    
     if (!SkScalarIsFinite(inset) || !SkIsValidRect(srcRect)) {
         return NULL;
     }
     // Negative numbers in src rect are not supported
     if (srcRect.fLeft < 0 || srcRect.fTop < 0) {
         return NULL;
     }
     return SkNEW_ARGS(SkMagnifierImageFilter, (srcRect, inset, input));
 }
 
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+SkMagnifierImageFilter::SkMagnifierImageFilter(SkReadBuffer& buffer)
+  : INHERITED(1, buffer) {
+    float x = buffer.readScalar();
+    float y = buffer.readScalar();
+    float width = buffer.readScalar();
+    float height = buffer.readScalar();
+    fSrcRect = SkRect::MakeXYWH(x, y, width, height);
+    fInset = buffer.readScalar();
+
+    buffer.validate(SkScalarIsFinite(fInset) && SkIsValidRect(fSrcRect) &&
+                    // Negative numbers in src rect are not supported
+                    (fSrcRect.fLeft >= 0) && (fSrcRect.fTop >= 0));
+}
+#endif
+
 SkMagnifierImageFilter::SkMagnifierImageFilter(const SkRect& srcRect, SkScalar inset,
                                                SkImageFilter* input)
     : INHERITED(1, &input), fSrcRect(srcRect), fInset(inset) {
     SkASSERT(srcRect.x() >= 0 && srcRect.y() >= 0 && inset >= 0);
 }
 
 #if SK_SUPPORT_GPU
 bool SkMagnifierImageFilter::asFragmentProcessor(GrFragmentProcessor** fp, GrTexture* texture,
                                                  const SkMatrix&, const SkIRect&) const {
     if (fp) {
@@ skipping 87 matching lines @@
 
             int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1);
             int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1);
 
             *dptr = sptr[y_val * width + x_val];
             dptr++;
         }
     }
     return true;
 }