Build BoringSSL without assembly if using MSan.

MSan requires all code be instrumented.

This also rolls BoringSSL. Summary of changes available at:
https://boringssl.googlesource.com/boringssl/+log/a07c0fc..9660032

BUG=488708

Review URL: https://codereview.chromium.org/1139263002

Cr-Commit-Position: refs/heads/master@{#330242}

DEPS

@@ -74,7 +74,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
-  'boringssl_revision': 'a07c0fc8f2181d086b1118712e2ceb0d1496fa0b',
+  'boringssl_revision': '966003273dc1a8b92f376aefa81232f14eecde8a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling nss
   # and whatever else without interference from each other.

third_party/boringssl/BUILD.gn

@@ -25,7 +25,7 @@ gypi_values =
 
 # Windows' assembly is built with Yasm. The other platforms use the platform
 # assembler.
-if (is_win) {
+if (is_win && !is_msan) {
   import("//third_party/yasm/yasm_assemble.gni")
   yasm_assemble("boringssl_asm") {
     if (current_cpu == "x64") {
@@ -70,7 +70,9 @@ component("boringssl") {
     "src/crypto",
   ]
 
-  if (current_cpu == "x64") {
+  if (is_msan) {
+    defines += [ "OPENSSL_NO_ASM" ]
+  } else if (current_cpu == "x64") {
     if (is_mac || is_ios) {
       sources += gypi_values.boringssl_mac_x86_64_sources
     } else if (is_linux || is_android) {

third_party/boringssl/boringssl.gyp

@@ -26,7 +26,7 @@
             'BORINGSSL_SHARED_LIBRARY',
           ],
         }],
-        ['target_arch == "arm"', {
+        ['target_arch == "arm" and msan == 0', {
           'conditions': [
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_arm_sources)' ],
@@ -35,7 +35,7 @@
             }],
           ],
         }],
-        ['target_arch == "arm64"', {
+        ['target_arch == "arm64" and msan == 0', {
           'conditions': [
             ['OS == "linux" or OS == "android"', {
               'sources': [ '<@(boringssl_linux_aarch64_sources)' ],
@@ -44,7 +44,7 @@
             }],
           ],
         }],
-        ['target_arch == "ia32"', {
+        ['target_arch == "ia32" and msan == 0', {
           'conditions': [
             ['OS == "mac" or OS == "ios"', {
               'sources': [ '<@(boringssl_mac_x86_sources)' ],
@@ -68,7 +68,7 @@
             }],
           ]
         }],
-        ['target_arch == "x64"', {
+        ['target_arch == "x64" and msan == 0', {
           'conditions': [
             ['OS == "mac" or OS == "ios"', {
               'sources': [ '<@(boringssl_mac_x86_64_sources)' ],
@@ -92,7 +92,7 @@
             }],
           ]
         }],
-        ['target_arch != "arm" and target_arch != "ia32" and target_arch != "x64" and target_arch != "arm64"', {
+        ['msan == 1 or (target_arch != "arm" and target_arch != "ia32" and target_arch != "x64" and target_arch != "arm64")', {
           'defines': [ 'OPENSSL_NO_ASM' ],
         }],
       ],