Reland "Prevent liveedit on or under generators with open activations"

src/liveedit-debugger.js

 // 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.
 
 // LiveEdit feature implementation. The script should be executed after
 // debug-debugger.js.
 
 // A LiveEdit namespace. It contains functions that modifies JavaScript code
 // according to changes of script source (if possible).
 //
@@ skipping 928 matching lines @@
 
     return dropped.length;
   }
 
   // A copy of the FunctionPatchabilityStatus enum from liveedit.h
   var FunctionPatchabilityStatus = {
       AVAILABLE_FOR_PATCH: 1,
       BLOCKED_ON_ACTIVE_STACK: 2,
       BLOCKED_ON_OTHER_STACK: 3,
       BLOCKED_UNDER_NATIVE_CODE: 4,
-      REPLACED_ON_ACTIVE_STACK: 5
+      REPLACED_ON_ACTIVE_STACK: 5,
+      BLOCKED_UNDER_GENERATOR: 6,
+      BLOCKED_ACTIVE_GENERATOR: 7
   };
 
   FunctionPatchabilityStatus.SymbolName = function(code) {
     var enumeration = FunctionPatchabilityStatus;
     for (name in enumeration) {
       if (enumeration[name] == code) {
         return name;
       }
     }
   };
@@ skipping 151 matching lines @@
   // Function is public.
   this.RestartFrame = RestartFrame;
 
   // Functions are public for tests.
   this.TestApi = {
     PosTranslator: PosTranslator,
     CompareStrings: CompareStrings,
     ApplySingleChunkPatch: ApplySingleChunkPatch
   };
 };