Use ARCH_CPU_X86_FAMILY instead of SSE, for subnormal float disabler

MSC doesn't define SSE, so this wasn't working properly on Windows

Bug: 686253
Change-Id: I5e49e9dec43228288261160d8e9eede9b4a6bf75
Reviewed-on: https://chromium-review.googlesource.com/570351
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Vladimir Levin <vmpstr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486517}

cc/base/math_util.cc

@@ -7,7 +7,7 @@
 #include <algorithm>
 #include <cmath>
 #include <limits>
-#ifdef __SSE__
+#if defined(ARCH_CPU_X86_FAMILY)
 #include <xmmintrin.h>
 #endif
 
@@ -810,15 +810,15 @@ gfx::Vector3dF MathUtil::GetYAxis(const gfx::Transform& transform) {
 }
 
 ScopedSubnormalFloatDisabler::ScopedSubnormalFloatDisabler() {
-#ifdef __SSE__
+#if defined(ARCH_CPU_X86_FAMILY)
   // Turn on "subnormals are zero" and "flush to zero" CSR flags.
   orig_state_ = _mm_getcsr();
   _mm_setcsr(orig_state_ | 0x8040);
 #endif
 }
 
 ScopedSubnormalFloatDisabler::~ScopedSubnormalFloatDisabler() {
-#ifdef __SSE__
+#if defined(ARCH_CPU_X86_FAMILY)
   _mm_setcsr(orig_state_);
 #endif
 }

cc/base/math_util.h

@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "base/logging.h"
+#include "build/build_config.h"
 #include "cc/base/base_export.h"
 #include "ui/gfx/geometry/box_f.h"
 #include "ui/gfx/geometry/point3_f.h"
@@ -330,7 +331,7 @@ class CC_BASE_EXPORT ScopedSubnormalFloatDisabler {
   ~ScopedSubnormalFloatDisabler();
 
  private:
-#ifdef __SSE__
+#if defined(ARCH_CPU_X86_FAMILY)
   unsigned int orig_state_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(ScopedSubnormalFloatDisabler);