Add documentation for platform/bindings

third_party/WebKit/Source/platform/bindings/DOMDataStore.h

Index: third_party/WebKit/Source/platform/bindings/DOMDataStore.h
diff --git a/third_party/WebKit/Source/platform/bindings/DOMDataStore.h b/third_party/WebKit/Source/platform/bindings/DOMDataStore.h
index 4db267a44e0ba6581be42dc9cfe8ab32cc20ef69..86f5f195502560134e89a0aea3709b927b560040 100644
--- a/third_party/WebKit/Source/platform/bindings/DOMDataStore.h
+++ b/third_party/WebKit/Source/platform/bindings/DOMDataStore.h
@@ -46,6 +46,9 @@
 
 namespace blink {
 
+// Holds a DOMWrapperMap specialized to map between ScriptWrappable objects and
+// their wrappers and provides an API to perform common operations with this map
+// and manage wrappers in a single world.

[haraken, 2017/04/29 02:39:11]

Clarify that DOMDataStore is a per-world thing and wrappers from different
worlds should not mix.

[adithyas, 2017/05/01 17:41:16]

Done.

 class DOMDataStore {
   WTF_MAKE_NONCOPYABLE(DOMDataStore);
   USING_FAST_MALLOC(DOMDataStore);