[debugger] expose side-effect free evaluate to inspector.

src/inspector/v8-debugger-agent-impl.h

Index: src/inspector/v8-debugger-agent-impl.h
diff --git a/src/inspector/v8-debugger-agent-impl.h b/src/inspector/v8-debugger-agent-impl.h
index d5b174a76c8a546e0a0f2c8d901fec613bd31e29..024c3d790e2c8365f5b91420befdd355810da237 100644
--- a/src/inspector/v8-debugger-agent-impl.h
+++ b/src/inspector/v8-debugger-agent-impl.h
@@ -92,8 +92,8 @@ class V8DebuggerAgentImpl : public protocol::Debugger::Backend {
   Response evaluateOnCallFrame(
       const String16& callFrameId, const String16& expression,
       Maybe<String16> objectGroup, Maybe<bool> includeCommandLineAPI,
-      Maybe<bool> silent, Maybe<bool> returnByValue,
-      Maybe<bool> generatePreview,
+      Maybe<bool> allowSideEffect, Maybe<bool> silent,
+      Maybe<bool> returnByValue, Maybe<bool> generatePreview,
       std::unique_ptr<protocol::Runtime::RemoteObject>* result,
       Maybe<protocol::Runtime::ExceptionDetails>*) override;
   Response setVariableValue(