SkLeanWindows.h: #include "Windows.h" fewer places

    $ git grep -l '<windows.h>' include src
    include/private/SkLeanWindows.h

    $ git grep -l SkLeanWindows.h | grep '\.h$'
    include/ports/SkTypeface_win.h
    include/utils/win/SkHRESULT.h
    include/utils/win/SkTScopedComPtr.h
    include/views/SkEvent.h
    src/core/SkMathPriv.h
    src/ports/SkTypeface_win_dw.h
    src/utils/SkThreadUtils_win.h
    src/utils/win/SkWGL.h

The same for  `#include <intrin.h>` that was found in SkMath.h.
Those functions that needed it are moved to SkMathPriv.h.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2041943002

CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_chromium_compile_dbg_ng,win_chromium_compile_rel_ng

Review-Url: https://codereview.chromium.org/2041943002
diff --git a/tools/gpu/GrTest.cpp b/tools/gpu/GrTest.cpp
index 8fdab2e..c797dc0 100644
--- a/tools/gpu/GrTest.cpp
+++ b/tools/gpu/GrTest.cpp
@@ -16,6 +16,7 @@
 
 #include "SkGpuDevice.h"
 #include "SkGrPriv.h"
+#include "SkMathPriv.h"
 #include "SkString.h"
 
 #include "text/GrBatchFontCache.h"