DM warning-free on win64

tests/FlateTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkData.h"
 #include "SkFlate.h"
 #include "SkStream.h"
@@ skipping 12 matching lines @@
     }
 
     static const size_t kGetSizeKey = 0xDEADBEEF;
 };
 
 // Returns a deterministic data of the given size that should be
 // very compressible.
 static SkData* new_test_data(size_t dataSize) {
     SkAutoTMalloc<uint8_t> testBuffer(dataSize);
     for (size_t i = 0; i < dataSize; ++i) {
-        testBuffer[i] = i % 64;
+        testBuffer[SkToInt(i)] = i % 64;
     }
     return SkData::NewFromMalloc(testBuffer.detach(), dataSize);
 }
 
 static void TestFlate(skiatest::Reporter* reporter, SkMemoryStream* testStream,
                       size_t dataSize) {
     SkASSERT(testStream != NULL);
 
     SkAutoDataUnref testData(new_test_data(dataSize));
     SkASSERT(testData->size() == dataSize);
@@ skipping 66 matching lines @@
     if (SkFlate::HaveFlate()) {
         SkMemoryStream memStream;
         TestFlate(reporter, &memStream, 512);
         TestFlate(reporter, &memStream, 10240);
 
         SkZeroSizeMemStream fileStream;
         TestFlate(reporter, &fileStream, 512);
         TestFlate(reporter, &fileStream, 10240);
     }
 }