[inspector] introduced stepIntoAsync for chained callbacks

src/inspector/js_protocol.json

Index: src/inspector/js_protocol.json
diff --git a/src/inspector/js_protocol.json b/src/inspector/js_protocol.json
index 7627b5b7f56588786412422f6d906a70f9cc515f..32a4f5430b68676dc64fd3e5f74c75ef80f3a545 100644
--- a/src/inspector/js_protocol.json
+++ b/src/inspector/js_protocol.json
@@ -558,6 +558,10 @@
                 "description": "Steps into the function call."
             },
             {
+                "name": "stepIntoAsync",
+                "description": "Steps into the scheduled callback."
+            },
+            {
                 "name": "stepOut",
                 "description": "Steps out of the function call."
             },
@@ -726,7 +730,7 @@
                 "name": "paused",
                 "parameters": [
                     { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "Call stack the virtual machine stopped on." },
-                    { "name": "reason", "type": "string", "enum": [ "XHR", "DOM", "EventListener", "exception", "assert", "debugCommand", "promiseRejection", "OOM", "other" ], "description": "Pause reason." },
+                    { "name": "reason", "type": "string", "enum": [ "XHR", "DOM", "EventListener", "exception", "assert", "debugCommand", "promiseRejection", "OOM", "other", "callbackScheduled" ], "description": "Pause reason." },
                     { "name": "data", "type": "object", "optional": true, "description": "Object containing break-specific auxiliary properties." },
                     { "name": "hitBreakpoints", "type": "array", "optional": true, "items": { "type": "string" }, "description": "Hit breakpoints IDs" },
                     { "name": "asyncStackTrace", "$ref": "Runtime.StackTrace", "optional": true, "description": "Async stack trace, if any." }