[Isolates] Merge 7051:7083 from bleeding_edge to isolates.

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 7083)
+++ src/objects.h	(working copy)
@@ -1555,12 +1555,14 @@
 
   MUST_USE_RESULT MaybeObject* SetFastElement(uint32_t index,
                                               Object* value,
+                                              StrictModeFlag strict_mode,
                                               bool check_prototype = true);
 
   // Set the index'th array element.
   // A Failure object is returned if GC is needed.
   MUST_USE_RESULT MaybeObject* SetElement(uint32_t index,
                                           Object* value,
+                                          StrictModeFlag strict_mode,
                                           bool check_prototype = true);
 
   // Returns the index'th element.
@@ -1820,12 +1822,15 @@
                                       uint32_t index,
                                       Object* value,
                                       JSObject* holder);
-  MUST_USE_RESULT MaybeObject* SetElementWithInterceptor(uint32_t index,
-                                                         Object* value,
-                                                         bool check_prototype);
+  MUST_USE_RESULT MaybeObject* SetElementWithInterceptor(
+      uint32_t index,
+      Object* value,
+      StrictModeFlag strict_mode,
+      bool check_prototype);
   MUST_USE_RESULT MaybeObject* SetElementWithoutInterceptor(
       uint32_t index,
       Object* value,
+      StrictModeFlag strict_mode,
       bool check_prototype);
 
   MaybeObject* GetElementPostInterceptor(Object* receiver, uint32_t index);
@@ -2470,13 +2475,18 @@
   }
 
   // Set the value for entry.
-  void ValueAtPut(int entry, Object* value) {
+  // Returns false if the put wasn't performed due to property being read only.
+  // Returns true on successful put.
+  bool ValueAtPut(int entry, Object* value) {
     // Check that this value can actually be written.
     PropertyDetails details = DetailsAt(entry);
     // If a value has not been initilized we allow writing to it even if
     // it is read only (a declared const that has not been initialized).
-    if (details.IsReadOnly() && !ValueAt(entry)->IsTheHole()) return;
-    this->set(HashTable<Shape, Key>::EntryToIndex(entry)+1, value);
+    if (details.IsReadOnly() && !ValueAt(entry)->IsTheHole()) {
+      return false;
+    }
+    this->set(HashTable<Shape, Key>::EntryToIndex(entry) + 1, value);
+    return true;
   }
 
   // Returns the property details for the property at entry.