Bug 1233983 - Make libvpx build with clang-cl

diff --git a/media/libvpx/vp8/common/generic/systemdependent.c b/media/libvpx/vp8/common/generic/systemdependent.c
index 4393ced..8ee7e02 100644
--- a/media/libvpx/vp8/common/generic/systemdependent.c
+++ b/media/libvpx/vp8/common/generic/systemdependent.c
@@ -24,6 +24,7 @@
 #include <unistd.h>
 #elif defined(_WIN32)
 #include <windows.h>
+#include <intrin.h>
 typedef void (WINAPI *PGNSI)(LPSYSTEM_INFO);
 #elif defined(__OS2__)
 #define INCL_DOS
diff --git a/media/libvpx/vp8/common/rtcd.c b/media/libvpx/vp8/common/rtcd.c
index ab0e9b4..98c2ecd 100644
--- a/media/libvpx/vp8/common/rtcd.c
+++ b/media/libvpx/vp8/common/rtcd.c
@@ -11,6 +11,9 @@
 #define RTCD_C
 #include "./vp8_rtcd.h"
 #include "vpx_ports/vpx_once.h"
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 
 void vp8_rtcd()
diff --git a/media/libvpx/vp8/decoder/threading.c b/media/libvpx/vp8/decoder/threading.c
index 6801532..a76672f 100644
--- a/media/libvpx/vp8/decoder/threading.c
+++ b/media/libvpx/vp8/decoder/threading.c
@@ -28,6 +28,9 @@
 #if CONFIG_ERROR_CONCEALMENT
 #include "error_concealment.h"
 #endif
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 #define CALLOC_ARRAY(p, n) CHECK_MEM_ERROR((p), vpx_calloc(sizeof(*(p)), (n)))
 #define CALLOC_ARRAY_ALIGNED(p, n, algn) do {                      \
diff --git a/media/libvpx/vp8/encoder/encodeframe.c b/media/libvpx/vp8/encoder/encodeframe.c
index d381d8d..5e84fb4 100644
--- a/media/libvpx/vp8/encoder/encodeframe.c
+++ b/media/libvpx/vp8/encoder/encodeframe.c
@@ -34,6 +34,9 @@
 #include "bitstream.h"
 #endif
 #include "encodeframe.h"
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 extern void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t) ;
 extern void vp8_calc_ref_frame_costs(int *ref_frame_cost,
diff --git a/media/libvpx/vp8/encoder/ethreading.c b/media/libvpx/vp8/encoder/ethreading.c
index 4e234cc..519ae73b 100644
--- a/media/libvpx/vp8/encoder/ethreading.c
+++ b/media/libvpx/vp8/encoder/ethreading.c
@@ -14,6 +14,9 @@
 #include "vp8/common/extend.h"
 #include "bitstream.h"
 #include "encodeframe.h"
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 #if CONFIG_MULTITHREAD
 
diff --git a/media/libvpx/vpx_dsp/vpx_dsp_rtcd.c b/media/libvpx/vpx_dsp/vpx_dsp_rtcd.c
index 5fe27b6..d247603 100644
--- a/media/libvpx/vpx_dsp/vpx_dsp_rtcd.c
+++ b/media/libvpx/vpx_dsp/vpx_dsp_rtcd.c
@@ -11,6 +11,9 @@
 #define RTCD_C
 #include "./vpx_dsp_rtcd.h"
 #include "vpx_ports/vpx_once.h"
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 void vpx_dsp_rtcd() {
   once(setup_rtcd_internal);
diff --git a/media/libvpx/vpx_scale/vpx_scale_rtcd.c b/media/libvpx/vpx_scale/vpx_scale_rtcd.c
index bea603f..65532ba 100644
--- a/media/libvpx/vpx_scale/vpx_scale_rtcd.c
+++ b/media/libvpx/vpx_scale/vpx_scale_rtcd.c
@@ -11,6 +11,9 @@
 #define RTCD_C
 #include "./vpx_scale_rtcd.h"
 #include "vpx_ports/vpx_once.h"
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
 
 void vpx_scale_rtcd()
 {