[inspector] exposed ExecutionContextId getter by context

include/v8-inspector.h

 // Copyright 2016 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_V8_INSPECTOR_H_
 #define V8_V8_INSPECTOR_H_
 
 #include <stdint.h>
 #include <cctype>
 
@@ skipping 67 matching lines @@
         hasMemoryOnConsole(false) {}
 
   v8::Local<v8::Context> context;
   // Each v8::Context is a part of a group. The group id must be non-zero.
   int contextGroupId;
   StringView humanReadableName;
   StringView origin;
   StringView auxData;
   bool hasMemoryOnConsole;
 
+  static int executionContextId(v8::Local<v8::Context> context);
+
  private:
   // Disallow copying and allocating this one.
   enum NotNullTagEnum { NotNullLiteral };
   void* operator new(size_t) = delete;
   void* operator new(size_t, NotNullTagEnum, void*) = delete;
   void* operator new(size_t, void*) = delete;
   V8ContextInfo(const V8ContextInfo&) = delete;
   V8ContextInfo& operator=(const V8ContextInfo&) = delete;
 };
 
@@ skipping 160 matching lines @@
 
   // API methods.
   virtual std::unique_ptr<V8StackTrace> createStackTrace(
       v8::Local<v8::StackTrace>) = 0;
   virtual std::unique_ptr<V8StackTrace> captureStackTrace(bool fullStack) = 0;
 };
 
 }  // namespace v8_inspector
 
 #endif  // V8_V8_INSPECTOR_H_