fix last warnings on w64 and turn on w.a.e.

bench/nanobench.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 <ctype.h>
 
 #include "Benchmark.h"
@@ skipping 507 matching lines @@
         // First add all .skps as RecordingBenches.
         while (fCurrentRecording < fSKPs.count()) {
             const SkString& path = fSKPs[fCurrentRecording++];
             SkAutoTUnref<SkPicture> pic;
             if (!ReadPicture(path.c_str(), &pic)) {
                 continue;
             }
             SkString name = SkOSPath::Basename(path.c_str());
             fSourceType = "skp";
             fBenchType  = "recording";
-            fSKPBytes = SkPictureUtils::ApproximateBytesUsed(pic);
+            fSKPBytes = static_cast<double>(SkPictureUtils::ApproximateBytesUsed(pic));
             fSKPOps   = pic->approximateOpCount();
             return SkNEW_ARGS(RecordingBench, (name.c_str(), pic.get(), FLAGS_bbh));
         }
 
         // Then once each for each scale as SKPBenches (playback).
         while (fCurrentScale < fScales.count()) {
             while (fCurrentSKP < fSKPs.count()) {
                 const SkString& path = fSKPs[fCurrentSKP];
                 SkAutoTUnref<SkPicture> pic;
                 if (!ReadPicture(path.c_str(), &pic)) {
@@ skipping 257 matching lines @@
 
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return nanobench_main();
 }
 #endif