[inspector] Support multiple sessions per context group

src/inspector/v8-debugger.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_INSPECTOR_V8DEBUGGER_H_
 #define V8_INSPECTOR_V8DEBUGGER_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 32 matching lines @@
 
   String16 setBreakpoint(const ScriptBreakpoint&, int* actualLineNumber,
                          int* actualColumnNumber);
   void removeBreakpoint(const String16& breakpointId);
   void setBreakpointsActivated(bool);
   bool breakpointsActivated() const { return m_breakpointsActivated; }
 
   v8::debug::ExceptionBreakState getPauseOnExceptionsState();
   void setPauseOnExceptionsState(v8::debug::ExceptionBreakState);
   bool canBreakProgram();
-  bool breakProgram(int targetContextGroupId);
+  void breakProgram(int targetContextGroupId);
   void continueProgram(int targetContextGroupId);
 
   void setPauseOnNextStatement(bool, int targetContextGroupId);
   void stepIntoStatement(int targetContextGroupId);
   void stepOverStatement(int targetContextGroupId);
   void stepOutOfFunction(int targetContextGroupId);
   void scheduleStepIntoAsync(
       std::unique_ptr<ScheduleStepIntoAsyncCallback> callback,
       int targetContextGroupId);
 
@@ skipping 160 matching lines @@
   v8::debug::ExceptionBreakState m_pauseOnExceptionsState;
 
   WasmTranslation m_wasmTranslation;
 
   DISALLOW_COPY_AND_ASSIGN(V8Debugger);
 };
 
 }  // namespace v8_inspector
 
 #endif  // V8_INSPECTOR_V8DEBUGGER_H_