Use assembly instead of C array literals to link the core snapshot into the VM.

build/toolchain/win/BUILD.gn

Index: build/toolchain/win/BUILD.gn
diff --git a/build/toolchain/win/BUILD.gn b/build/toolchain/win/BUILD.gn
index 13d7ae2075a26591e9d332167283aae286608f6a..fedac068989ceae43ef0bf835b046d2096ac32c6 100644
--- a/build/toolchain/win/BUILD.gn
+++ b/build/toolchain/win/BUILD.gn
@@ -112,9 +112,14 @@ template("msvc_toolchain") {
     }
 
     tool("asm") {
-      # TODO(brettw): "/safeseh" assembler argument is hardcoded here. Extract
-      # assembler flags to a variable like cflags. crbug.com/418613
-      command = "$python_path gyp-win-tool asm-wrapper $env ml.exe {{defines}} {{include_dirs}} {{asmflags}} /safeseh /c /Fo {{output}} {{source}}"
+      if (invoker.current_cpu == "x64") {
+        ml = "ml64.exe"
+        x64 = "-D_ML64_X64"
+      } else {
+        ml = "ml.exe"
+        x64 = ""
+      }
+      command = "$python_path gyp-win-tool asm-wrapper $env $ml $x64 {{defines}} {{include_dirs}} {{asmflags}} /c /Fo {{output}} {{source}}"
       description = "ASM {{output}}"
       outputs = [
         "{{target_out_dir}}/{{target_output_name}}/{{source_name_part}}.obj",