[debugger] allow debug-evaluate to change stack and context values.

src/contexts.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_CONTEXTS_H_
 #define V8_CONTEXTS_H_
 
 #include "src/heap/heap.h"
 #include "src/objects.h"
 
@@ skipping 388 matching lines @@
     NEXT_CONTEXT_LINK,         // Weak.
 
     // Total number of slots.
     NATIVE_CONTEXT_SLOTS,
     FIRST_WEAK_SLOT = OPTIMIZED_FUNCTIONS_LIST,
     FIRST_JS_ARRAY_MAP_SLOT = JS_ARRAY_FAST_SMI_ELEMENTS_MAP_INDEX,
 
     MIN_CONTEXT_SLOTS = GLOBAL_PROXY_INDEX,
     // This slot holds the thrown value in catch contexts.
     THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS,
+
+    // These slots hold values in debug evaluate contexts.
+    WRAPPED_CONTEXT_INDEX = MIN_CONTEXT_SLOTS,
+    WHITE_LIST_INDEX = MIN_CONTEXT_SLOTS + 1
   };
 
   void IncrementErrorsThrown();
   int GetErrorsThrown();
 
   // Direct slot access.
   inline JSFunction* closure();
   inline void set_closure(JSFunction* closure);
 
   inline Context* previous();
@@ skipping 32 matching lines @@
   inline Context* native_context();
   inline void set_native_context(Context* context);
 
   // Predicates for context types.  IsNativeContext is also defined on Object
   // because we frequently have to know if arbitrary objects are natives
   // contexts.
   inline bool IsNativeContext();
   inline bool IsFunctionContext();
   inline bool IsCatchContext();
   inline bool IsWithContext();
+  inline bool IsDebugEvaluateContext();
   inline bool IsBlockContext();
   inline bool IsModuleContext();
   inline bool IsScriptContext();
 
   inline bool HasSameSecurityTokenAs(Context* that);
 
   // Initializes global variable bindings in given script context.
   void InitializeGlobalSlots();
 
   // A native context holds a list of all functions with optimized code.
@@ skipping 95 matching lines @@
 #endif
 
   STATIC_ASSERT(kHeaderSize == Internals::kContextHeaderSize);
   STATIC_ASSERT(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CONTEXTS_H_