Disable SSE4 procs until Valgrind's sorted out.

src/opts/opts_check_x86.cpp

Index: src/opts/opts_check_x86.cpp
diff --git a/src/opts/opts_check_x86.cpp b/src/opts/opts_check_x86.cpp
index b94969890d1f540e982d696452fc772286d3c84f..e1c6572d9ef16694b0b426bf575242e4d5040d89 100644
--- a/src/opts/opts_check_x86.cpp
+++ b/src/opts/opts_check_x86.cpp
@@ -216,7 +216,9 @@ static SkBlitRow::Proc32 platform_32_procs_SSE2[] = {
     S32A_Blend_BlitRow32_SSE2,          // S32A_Blend,
 };
 
-#if defined(SK_ATT_ASM_SUPPORTED)
+// Temporarily disable SSE4 procs while we sort out Valgrind errors.
+
+#if 0 && defined(SK_ATT_ASM_SUPPORTED)
 static SkBlitRow::Proc32 platform_32_procs_SSE4[] = {
     NULL,                               // S32_Opaque,
     S32_Blend_BlitRow32_SSE2,           // S32_Blend,
@@ -226,7 +228,7 @@ static SkBlitRow::Proc32 platform_32_procs_SSE4[] = {
 #endif
 
 SkBlitRow::Proc32 SkBlitRow::PlatformProcs32(unsigned flags) {
-#if defined(SK_ATT_ASM_SUPPORTED)
+#if 0 && defined(SK_ATT_ASM_SUPPORTED)
     if (supports_simd(SK_CPU_SSE_LEVEL_SSE41)) {
         return platform_32_procs_SSE4[flags];
     } else