Revert r19409: "Allow ICs to be generated for own global proxy."

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index ca324603f79bdbbab5b62972c72ab84f948fb31d..a008b6a3c1c402fb747773f4bfade3490a6231df 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -778,7 +778,7 @@ static MayAccessDecision MayAccessPreCheck(Isolate* isolate,
 
 bool Isolate::MayNamedAccess(JSObject* receiver, Object* key,
                              v8::AccessType type) {
-  ASSERT(receiver->IsJSGlobalProxy() || receiver->IsAccessCheckNeeded());
+  ASSERT(receiver->IsAccessCheckNeeded());
 
   // The callers of this method are not expecting a GC.
   DisallowHeapAllocation no_gc;
@@ -829,7 +829,7 @@ bool Isolate::MayNamedAccess(JSObject* receiver, Object* key,
 bool Isolate::MayIndexedAccess(JSObject* receiver,
                                uint32_t index,
                                v8::AccessType type) {
-  ASSERT(receiver->IsJSGlobalProxy() || receiver->IsAccessCheckNeeded());
+  ASSERT(receiver->IsAccessCheckNeeded());
   // Check for compatibility between the security tokens in the
   // current lexical context and the accessed object.
   ASSERT(context());