bindings: Use forward declarations for wrapper types in dictionary_impl

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

Index: third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl
diff --git a/third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl b/third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl
index b1c55e02b0bc2472e26907bcc151312ee92fae18..69df026df4f05513047e79a88580381ed8acf4d1 100644
--- a/third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl
+++ b/third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl
@@ -18,6 +18,10 @@ namespace blink {
 
 {{cpp_class}}::~{{cpp_class}}() {}
 
+{{cpp_class}}::{{cpp_class}}(const {{cpp_class}}&) = default;

[Yuki, 2016/11/14 09:26:14]

I don't know well about the windows-specific issue, but if you can write "=
default" in the header, it's definitely better.

[bashi, 2016/11/14 22:08:49]

I had to write them in .cpp to avoid instanciation of HeapVector<Member<T>>.

+
+{{cpp_class}}& {{cpp_class}}::operator=(const {{cpp_class}}&) = default;
+
 {% for member in members %}
 bool {{cpp_class}}::{{member.has_method_name}}() const {
   return {{member.has_method_expression}};