Revert of Switch uses of SkChecksum::Compute to Murmur3.

src/core/SkPictureFlat.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkPictureFlat_DEFINED
 #define SkPictureFlat_DEFINED
 
@@ skipping 161 matching lines @@
 // implemented, or SkChunkFlatController can be used to use an SkChunkAllocator and never do
 // replacements.
 //
 //
 ///////////////////////////////////////////////////////////////////////////////
 
 class SkFlatData;
 
 class SkFlatController : public SkRefCnt {
 public:
-
+    
 
     SkFlatController(uint32_t writeBufferFlags = 0);
     virtual ~SkFlatController();
     /**
      * Return a new block of memory for the SkFlatDictionary to use.
      * This memory is owned by the controller and has the same lifetime unless you
      * call unalloc(), in which case it may be freed early.
      */
     virtual void* allocThrow(size_t bytes) = 0;
 
@@ skipping 157 matching lines @@
 
     void setIndex(int index) { fIndex = index; }
     uint8_t* data() { return (uint8_t*)this + sizeof(*this); }
 
     // This assumes the payload flat data has already been written and does not modify it.
     void stampHeader(int index, int32_t size) {
         SkASSERT(SkIsAlign4(size));
         fIndex     = index;
         fFlatSize  = size;
         fTopBot[0] = SK_ScalarNaN;  // Mark as unwritten.
-        fChecksum  = SkChecksum::Murmur3(this->data(), size);
+        fChecksum  = SkChecksum::Compute((uint32_t*)this->data(), size);
     }
 
     int fIndex;
     int32_t fFlatSize;
     uint32_t fChecksum;
     mutable SkScalar fTopBot[2];  // Cache of FontMetrics fTop, fBottom.  Starts as [NaN,?].
     // uint32_t flattenedData[] implicitly hangs off the end.
 
     template <typename T, typename Traits> friend class SkFlatDictionary;
 };
@@ skipping 182 matching lines @@
     bool fReady;
 
     // For index -> SkFlatData.  0-based, while all indices in the API are 1-based.  Careful!
     SkTDArray<const SkFlatData*> fIndexedData;
 
     // For SkFlatData -> cached SkFlatData, which has index().
     SkTDynamicHash<SkFlatData, SkFlatData, SkFlatData::HashTraits> fHash;
 };
 
 #endif