Debugger: refactor ScopeIterator, FrameInspector and DebugEvaluate.

src/isolate.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_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 65 matching lines @@
 class UnicodeCache;
 template <StateTag Tag> class VMState;
 
 // 'void function pointer', used to roundtrip the
 // ExternalReference::ExternalReferenceRedirector since we can not include
 // assembler.h, where it is defined, here.
 typedef void* ExternalReferenceRedirectorPointer();
 
 
 class Debug;
-class Debugger;
 class PromiseOnStack;
 class Redirection;
 class Simulator;
 
 namespace interpreter {
 class Interpreter;
 }
 
 // Static indirection table for handles to constants.  If a frame
 // element represents a constant, the data contains an index into
@@ skipping 1505 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_