[debug] Add Eval scope type to inspector protocol

src/inspector/js_protocol.json

 {
     "version": { "major": "1", "minor": "2" },
     "domains": [
     {
         "domain": "Schema",
         "description": "Provides information about the protocol schema.",
         "types": [
             {
                 "id": "Domain",
                 "type": "object",
@@ skipping 442 matching lines @@
                     { "name": "scopeChain", "type": "array", "items": { "$ref": "Scope" }, "description": "Scope chain for this call frame." },
                     { "name": "this", "$ref": "Runtime.RemoteObject", "description": "<code>this</code> object for this call frame." },
                     { "name": "returnValue", "$ref": "Runtime.RemoteObject", "optional": true, "description": "The value being returned, if the function is at return point." }
                 ],
                 "description": "JavaScript call frame. Array of call frames form the call stack."
             },
             {
                 "id": "Scope",
                 "type": "object",
                 "properties": [
-                    { "name": "type", "type": "string", "enum": ["global", "local", "with", "closure", "catch", "block", "script"], "description": "Scope type." },
+                    { "name": "type", "type": "string", "enum": ["global", "local", "with", "closure", "catch", "block", "script", "eval"], "description": "Scope type." },
                     { "name": "object", "$ref": "Runtime.RemoteObject", "description": "Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties." },
                     { "name": "name", "type": "string", "optional": true },
                     { "name": "startLocation", "$ref": "Location", "optional": true, "description": "Location in the source code where scope starts" },
                     { "name": "endLocation", "$ref": "Location", "optional": true, "description": "Location in the source code where scope ends" }
                 ],
                 "description": "Scope description."
             },
             {
                 "id": "SearchMatch",
                 "type": "object",
@@ skipping 526 matching lines @@
             {
                 "name": "heapStatsUpdate",
                 "description": "If heap objects tracking has been started then backend may send update for one or more fragments",
                 "parameters": [
                     { "name": "statsUpdate", "type": "array", "items": { "type": "integer" }, "description": "An array of triplets. Each triplet describes a fragment. The first integer is the fragment index, the second integer is a total count of objects for the fragment, the third integer is a total size of the objects for the fragment."}
                 ]
             }
         ]
     }]
 }