Bug 1766646 - (fix-01b3e24a83) fix build failures on Windows - moz.build file updates

CLOBBER

@@ -22,5 +22,5 @@
 # changes to stick? As of bug 928195, this shouldn't be necessary! Please
 # don't change CLOBBER for WebIDL changes any more.
 
-Modified build files in third_party/libwebrtc - Bug 1766646 - Vendor libwebrtc from 01b3e24a83
+Modified build files in third_party/libwebrtc - Bug 1766646 - (fix-01b3e24a83) fix build failures on Windows
 

third_party/libwebrtc/modules/audio_processing/agc2/rnn_vad/vector_math_avx2_gn/moz.build

@@ -9,6 +9,11 @@
 COMPILE_FLAGS["OS_INCLUDES"] = []
 AllowCompilerWarnings()
 
+CXXFLAGS += [
+    "-mavx2",
+    "-mfma"
+]
+
 DEFINES["ABSL_ALLOCATOR_NOTHROW"] = "1"
 DEFINES["RTC_ENABLE_VP9"] = True
 DEFINES["WEBRTC_ENABLE_AVX2"] = True
@@ -44,11 +49,6 @@ if CONFIG["MOZ_DEBUG"] == "1":
 
 if CONFIG["OS_TARGET"] == "Android":
 
-    CXXFLAGS += [
-        "-mavx2",
-        "-mfma"
-    ]
-
     DEFINES["ANDROID"] = True
     DEFINES["ANDROID_NDK_VERSION_ROLL"] = "r20_1"
     DEFINES["HAVE_SYS_UIO_H"] = True
@@ -66,11 +66,6 @@ if CONFIG["OS_TARGET"] == "Android":
 
 if CONFIG["OS_TARGET"] == "Darwin":
 
-    CXXFLAGS += [
-        "-mavx2",
-        "-mfma"
-    ]
-
     DEFINES["WEBRTC_MAC"] = True
     DEFINES["WEBRTC_POSIX"] = True
     DEFINES["_LIBCPP_HAS_NO_ALIGNED_ALLOCATION"] = True
@@ -80,11 +75,6 @@ if CONFIG["OS_TARGET"] == "Darwin":
 
 if CONFIG["OS_TARGET"] == "Linux":
 
-    CXXFLAGS += [
-        "-mavx2",
-        "-mfma"
-    ]
-
     DEFINES["USE_AURA"] = "1"
     DEFINES["USE_GLIB"] = "1"
     DEFINES["USE_NSS_CERTS"] = "1"
@@ -105,11 +95,6 @@ if CONFIG["OS_TARGET"] == "Linux":
 
 if CONFIG["OS_TARGET"] == "OpenBSD":
 
-    CXXFLAGS += [
-        "-mavx2",
-        "-mfma"
-    ]
-
     DEFINES["USE_GLIB"] = "1"
     DEFINES["USE_X11"] = "1"
     DEFINES["WEBRTC_BSD"] = True