Make chrome.exe built with ASan/Win work with sandbox enabled

components/nacl/loader/nacl_main_platform_delegate_win.cc

Index: components/nacl/loader/nacl_main_platform_delegate_win.cc
diff --git a/components/nacl/loader/nacl_main_platform_delegate_win.cc b/components/nacl/loader/nacl_main_platform_delegate_win.cc
index f530961700f1b27e921f3ee038dd5905ece51182..cc75ad282f1b0f145dbea9d44d65970c5ced7c3c 100644
--- a/components/nacl/loader/nacl_main_platform_delegate_win.cc
+++ b/components/nacl/loader/nacl_main_platform_delegate_win.cc
@@ -26,6 +26,13 @@ void NaClMainPlatformDelegate::EnableSandbox() {
   // Warm up language subsystems before the sandbox is turned on.
   ::GetUserDefaultLangID();
   ::GetUserDefaultLCID();
+
+#if defined(ADDRESS_SANITIZER)
+    // Bind and leak dbghelp.dll before the token is lowered, otherwise
+    // AddressSanitizer will crash when trying to symbolize a report.
+    CHECK(LoadLibraryA("dbghelp.dll"));
+#endif
+
   // Turn the sandbox on.
   target_services->LowerToken();
 }