Add "Request app banner" context menu in DevTools

third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js

Index: third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js b/third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js
index ef57dd3eaa15b750c4493f891d968aa14014a4be..ee4b71b775afb7c0e9feae307977fc92bcd3cdc4 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js
@@ -494,7 +494,10 @@ WebInspector.NavigatorView.prototype = {
 
         contextMenu.show();
     },
-
+    _openAppBanner: function(agent)
+    {
+      agent.openAppBanner();
+    },
     /**
      * @param {!Event} event
      * @param {!WebInspector.NavigatorFolderTreeNode} node
@@ -505,7 +508,12 @@ WebInspector.NavigatorView.prototype = {
         var project = node._project;
 
         var contextMenu = new WebInspector.ContextMenu(event);
-
+        if (node.parent.isRoot()) {
+          var target =  WebInspector.NetworkProject.targetForProject(project);
+          if (target.isPage()) {
+            contextMenu.appendItem(WebInspector.UIString.capitalize("Open app banner"), this._openAppBanner.bind(this, target.pageAgent()));

[pfeldman, 2016/01/14 04:43:05]

I think this item should go into the device mode tree dots menu, as a top level
item for now.

1) DeviceModeView.js should get
contextMenu.appendItemsAtLocation("deviceModeMenu")

2) declare in emulation module:
        {
            "type": "@WebInspector.ActionDelegate",
            "actionId": "emulation.open-app-banner",
            "className": "WebInspector.OpenAppBanner",
            "title": "Open app banner"
        },
        {
            "type": "context-menu-item",
            "location": "deviceModeMenu/tools",
            "order": 10,
            "actionId": "emulation.open-app-banner"
        }

[horo, 2016/01/15 10:00:22]

Implemented in DeviceModeView.
But I think DeviceModeView is not available while remote debugging.
Is my understanding wrong?
I think this "Open app banner" must be available while remote debugging.

+          }
+        }
         if (project && project.type() === WebInspector.projectTypes.FileSystem) {
             contextMenu.appendItem(WebInspector.UIString.capitalize("Refresh"), this._handleContextMenuRefresh.bind(this, project, path));
             if (node instanceof WebInspector.NavigatorFolderTreeNode) {