Add UI DevTools under chrome://inspect/#other

chrome/browser/ui/webui/inspect_ui.cc

Index: chrome/browser/ui/webui/inspect_ui.cc
diff --git a/chrome/browser/ui/webui/inspect_ui.cc b/chrome/browser/ui/webui/inspect_ui.cc
index 28419a934f4e309531b5d3f456d20e2bffc3f365..f4d9b5f9a6fe372ac747ab6e53367e3724066ce2 100644
--- a/chrome/browser/ui/webui/inspect_ui.cc
+++ b/chrome/browser/ui/webui/inspect_ui.cc
@@ -39,6 +39,7 @@ namespace {
 
 const char kInitUICommand[]  = "init-ui";
 const char kInspectCommand[]  = "inspect";
+const char kInspectUiCommand[] = "inspect-ui";

[dgozman, 2016/11/15 23:47:08]

inspect-additional

[Sarmad Hashmi, 2016/11/16 01:42:57]

Done.

 const char kActivateCommand[]  = "activate";
 const char kCloseCommand[]  = "close";
 const char kReloadCommand[]  = "reload";
@@ -72,6 +73,7 @@ class InspectMessageHandler : public WebUIMessageHandler {
 
   void HandleInitUICommand(const base::ListValue* args);
   void HandleInspectCommand(const base::ListValue* args);
+  void HandleInspectUiCommand(const base::ListValue* args);
   void HandleActivateCommand(const base::ListValue* args);
   void HandleCloseCommand(const base::ListValue* args);
   void HandleReloadCommand(const base::ListValue* args);
@@ -94,6 +96,10 @@ void InspectMessageHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(kInspectCommand,
       base::Bind(&InspectMessageHandler::HandleInspectCommand,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      kInspectUiCommand,
+      base::Bind(&InspectMessageHandler::HandleInspectUiCommand,
+                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback(kActivateCommand,
       base::Bind(&InspectMessageHandler::HandleActivateCommand,
                  base::Unretained(this)));
@@ -150,6 +156,19 @@ void InspectMessageHandler::HandleInspectCommand(const base::ListValue* args) {
     inspect_ui_->Inspect(source, id);
 }
 
+void InspectMessageHandler::HandleInspectUiCommand(
+    const base::ListValue* args) {
+  std::string url;
+  if (ParseStringArgs(args, &url, nullptr)) {
+    WebContents* inspect_ui = web_ui()->GetWebContents();
+    web_ui()->GetWebContents()->GetDelegate()->OpenURLFromTab(
+        inspect_ui,
+        content::OpenURLParams(GURL(url), content::Referrer(),
+                               WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                               ui::PAGE_TRANSITION_AUTO_TOPLEVEL, false));
+  }
+}
+
 void InspectMessageHandler::HandleActivateCommand(const base::ListValue* args) {
   std::string source;
   std::string id;