bindings: Make some value iterator properties aliases to Array.prototype functions

third_party/WebKit/Source/bindings/core/v8/Iterable.h

Index: third_party/WebKit/Source/bindings/core/v8/Iterable.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/Iterable.h b/third_party/WebKit/Source/bindings/core/v8/Iterable.h
index 84e61a3e4dfd95098bae38b8716c604d998a7a61..d5087624a6888067ff198f97c5f255604798de04 100644
--- a/third_party/WebKit/Source/bindings/core/v8/Iterable.h
+++ b/third_party/WebKit/Source/bindings/core/v8/Iterable.h
@@ -11,7 +11,9 @@
 
 namespace blink {
 
-// Typically, use one of ValueIterable<> and PairIterable<> (below) instead!
+// Typically, you should use PairIterable<> (below) instead.
+// Also, note that value iterators are set up automatically by the bindings
+// code and the operations below come directly from V8.
 template <typename KeyType, typename ValueType>
 class Iterable {
  public:
@@ -165,45 +167,6 @@ class Iterable {
 };
 
 // Utiltity mixin base-class for classes implementing IDL interfaces with
-// "iterable<T>".
-template <typename ValueType>
-class ValueIterable : public Iterable<unsigned, ValueType> {
- public:
-  Iterator* iterator(ScriptState* scriptState, ExceptionState& exceptionState) {
-    return this->valuesForBinding(scriptState, exceptionState);
-  }
-
-  class IterationSource
-      : public Iterable<unsigned, ValueType>::IterationSource {
-   public:
-    IterationSource() : m_index(0) {}
-
-    ~IterationSource() override {}
-
-    // If end of iteration has been reached or an exception thrown: return
-    // false.
-    // Otherwise: set |value| and return true.
-    // Note: |this->m_index| is the index being accessed.
-    virtual bool next(ScriptState*, ValueType&, ExceptionState&) = 0;
-
-   protected:
-    unsigned m_index;
-
-   private:
-    bool next(ScriptState* scriptState,
-              unsigned& key,
-              ValueType& value,
-              ExceptionState& exceptionState) final {
-      if (!next(scriptState, value, exceptionState))
-        return false;
-      key = m_index;
-      ++m_index;
-      return true;
-    }
-  };
-};
-
-// Utiltity mixin base-class for classes implementing IDL interfaces with
 // "iterable<T1, T2>".
 template <typename KeyType, typename ValueType>
 class PairIterable : public Iterable<KeyType, ValueType> {