Devtools: convert pair of booleans in setInspectModeEnabled into enum parameter

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 25d9a0ba0a9f45a932b96fd5c11cc4380b731cad..0c2199a4c9c5d5b48815913d9588c39a2e6c6aa0 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -1265,11 +1265,23 @@ PassOwnPtr<InspectorHighlightConfig> InspectorDOMAgent::highlightConfigFromInspe
     return highlightConfig.release();
 }
 
-void InspectorDOMAgent::setInspectModeEnabled(ErrorString* errorString, bool enabled, const bool* inspectUAShadowDOM, const RefPtr<JSONObject>* highlightConfig)
-{
-    if (enabled && !pushDocumentUponHandlelessOperation(errorString))
+void InspectorDOMAgent::setInspectMode(ErrorString* errorString, const String& mode, const RefPtr<JSONObject>* highlightConfig)
+{
+    SearchMode searchMode;
+    if (mode == "searchForNormal") {
+        searchMode = SearchingForNormal;
+    } else if (mode == "searchForUAShadowDOM") {
+        searchMode = SearchingForUAShadow;
+    } else if (mode == "none") {
+        searchMode = NotSearching;
+    } else {
+        *errorString = "Unknown mode \"" + mode + "\" was provided.";
+        return;
+    }
+
+    if (searchMode != NotSearching && !pushDocumentUponHandlelessOperation(errorString))
         return;
-    SearchMode searchMode = enabled ? (asBool(inspectUAShadowDOM) ? SearchingForUAShadow : SearchingForNormal) : NotSearching;
+
     setSearchingForNode(errorString, searchMode, highlightConfig ? highlightConfig->get() : nullptr);
 }