Make [TreatNullAs=NullString] DOMString arguments nullable instead

An IDL method declaration such as

  void f([TreatNullAs=NullString] DOMString x);

can be transformed into

  void f(DOMString? x);

without affecting behavior or generated code, so do that.

Arguments that also have [TreatUndefinedAs=NullString] can't be converted
this way (yet), so this CL leaves them unchanged for now.

Review URL: https://codereview.chromium.org/367663002

git-svn-id: svn://svn.chromium.org/blink/trunk@177322 bbb929c8-8fbe-4397-9dbb-9b2b20218538
10 files changed
tree: 0ef525d7f3e7c1a2817dac8bdf9987aae33e09b3
  1. third_party/