Introduce TypeFeedbackVector, as FixedArray grew constrictive.

src/liveedit.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_LIVEEDIT_H_
 #define V8_LIVEEDIT_H_
 
 
 
 // Live Edit feature implementation.
@@ skipping 289 matching lines @@
   int GetLiteralCount() {
     return this->GetSmiValueField(kLiteralNumOffset_);
   }
 
   int GetParentIndex() {
     return this->GetSmiValueField(kParentIndexOffset_);
   }
 
   Handle<Code> GetFunctionCode();
 
-  Handle<FixedArray> GetFeedbackVector();
+  Handle<TypeFeedbackVector> GetFeedbackVector();
 
   Handle<Object> GetCodeScopeInfo();
 
   int GetStartPosition() {
     return this->GetSmiValueField(kStartPositionOffset_);
   }
 
   int GetEndPosition() { return this->GetSmiValueField(kEndPositionOffset_); }
 
   int GetSlotCount() {
@@ skipping 50 matching lines @@
   static const int kEndPositionOffset_ = 2;
   static const int kSharedInfoOffset_ = 3;
   static const int kSize_ = 4;
 
   friend class JSArrayBasedStruct<SharedInfoWrapper>;
 };
 
 } }  // namespace v8::internal
 
 #endif /* V*_LIVEEDIT_H_ */