[es6] Introduce %ToInteger and %ToLength.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1109 matching lines @@
   MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
                                                   Handle<Object> input);
 
   // ES6 section 7.1.1 ToPrimitive
   MUST_USE_RESULT static inline MaybeHandle<Object> ToPrimitive(
       Handle<Object> input, ToPrimitiveHint hint = ToPrimitiveHint::kDefault);
 
   // ES6 section 7.1.3 ToNumber
   MUST_USE_RESULT static MaybeHandle<Object> ToNumber(Handle<Object> input);
 
+  // ES6 section 7.1.4 ToInteger
+  MUST_USE_RESULT static MaybeHandle<Object> ToInteger(Isolate* isolate,
+                                                       Handle<Object> input);
+
+  // ES6 section 7.1.5 ToInt32
+  MUST_USE_RESULT static MaybeHandle<Object> ToInt32(Isolate* isolate,
+                                                     Handle<Object> input);
+
+  // ES6 section 7.1.6 ToUint32
+  MUST_USE_RESULT static MaybeHandle<Object> ToUint32(Isolate* isolate,
+                                                      Handle<Object> input);
+
   // ES6 section 7.1.12 ToString
   MUST_USE_RESULT static MaybeHandle<String> ToString(Isolate* isolate,
                                                       Handle<Object> input);
 
+  // ES6 section 7.1.15 ToLength
+  MUST_USE_RESULT static MaybeHandle<Object> ToLength(Isolate* isolate,
+                                                      Handle<Object> input);
+
   // ES6 section 7.3.9 GetMethod
   MUST_USE_RESULT static MaybeHandle<Object> GetMethod(
       Handle<JSReceiver> receiver, Handle<Name> name);
 
   // ES6 section 12.5.6 The typeof Operator
   static Handle<String> TypeOf(Isolate* isolate, Handle<Object> object);
 
   // ES6 section 12.6 Multiplicative Operators
   MUST_USE_RESULT static MaybeHandle<Object> Multiply(
       Isolate* isolate, Handle<Object> lhs, Handle<Object> rhs,
@@ skipping 9423 matching lines @@
 
   Isolate* isolate_;
   Handle<FixedArray> keys_;
   Handle<OrderedHashSet> set_;
   int length_;
   DISALLOW_COPY_AND_ASSIGN(KeyAccumulator);
 };
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_