change tile size for convert util and unittest to 32x32 which would lend itself to AVX2 or VP9

BUG=none
TEST=none
R=dingkai@google.com

Review URL: https://webrtc-codereview.appspot.com/1667004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@726 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 725
+Version: 726
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 725
+#define LIBYUV_VERSION 726
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

unit_test/scale_argb_test.cc

@@ -99,8 +99,8 @@ static int ARGBTestFilter(int src_width, int src_height,
   return max_diff;
 }
 
-static const int kTileX = 16;
-static const int kTileY = 16;
+static const int kTileX = 32;
+static const int kTileY = 32;
 
 static int TileARGBScale(const uint8* src_argb, int src_stride_argb,
                          int src_width, int src_height,

util/convert.cc

@@ -155,8 +155,8 @@ void ParseOptions(int argc, const char* argv[]) {
   }
 }
 
-static const int kTileX = 12;
-static const int kTileY = 8;
+static const int kTileX = 32;
+static const int kTileY = 32;
 
 static int TileARGBScale(const uint8* src_argb, int src_stride_argb,
                          int src_width, int src_height,