[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl

Index: third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl
diff --git a/third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl b/third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl
index ff2eca5b997b4c4d09d6452eb651bab2a68b005a..0fff9866890271dc3a40fb72aae0cc44207b0b0e 100644
--- a/third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl
+++ b/third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl
@@ -7,7 +7,13 @@ if (v8Value->Is{{member.type_name}}()) {
 {% else %}
 if (V8{{member.type_name}}::hasInstance(v8Value, isolate)) {
 {% endif %}
+{% if member.is_array_buffer_view_or_typed_array %}
+  {{member.cpp_local_type}} cppValue = toNotShared<{{member.cpp_local_type}}>(isolate, v8Value, exceptionState);
+  if (exceptionState.hadException())
+    return;
+{% else %}
   {{member.cpp_local_type}} cppValue = V8{{member.type_name}}::toImpl(v8::Local<v8::Object>::Cast(v8Value));
+{% endif %}
   impl.set{{member.type_name}}(cppValue);
   return;
 }