[inspector] expose V8InspectorSession::breakProgram in test harness.

test/inspector/inspector-impl.h

Index: test/inspector/inspector-impl.h
diff --git a/test/inspector/inspector-impl.h b/test/inspector/inspector-impl.h
index e18f6d5e1a6f137dac0f878854450ff4e7150528..5da332bb271671fa73151597fc84b5ad5fc4ccd7 100644
--- a/test/inspector/inspector-impl.h
+++ b/test/inspector/inspector-impl.h
@@ -27,9 +27,13 @@ class InspectorClientImpl : public v8_inspector::V8InspectorClient {
 
   static v8_inspector::V8Inspector* InspectorFromContext(
       v8::Local<v8::Context> context);
+  static v8_inspector::V8InspectorSession* SessionFromContext(
+      v8::Local<v8::Context> context);
 
   void setCurrentTimeMSForTest(double time);
 
+  v8_inspector::V8InspectorSession* session() const { return session_.get(); }
+
  private:
   // V8InspectorClient implementation.
   v8::Local<v8::Context> ensureDefaultContextInGroup(
@@ -38,9 +42,6 @@ class InspectorClientImpl : public v8_inspector::V8InspectorClient {
   void runMessageLoopOnPause(int context_group_id) override;
   void quitMessageLoopOnPause() override;
 
-  static v8_inspector::V8InspectorSession* SessionFromContext(
-      v8::Local<v8::Context> context);
-
   friend class SendMessageToBackendTask;
 
   friend class ConnectTask;