[DevTools] Extract DeviceModeButton from AdvancedApp.

Source/devtools/front_end/main/module.json

Index: Source/devtools/front_end/main/module.json
diff --git a/Source/devtools/front_end/main/module.json b/Source/devtools/front_end/main/module.json
index 928df4f1ef2a79bf23200ada1b736f9aafa87710..0407bcdc831182f4a963f271f7cf300735c4304f 100644
--- a/Source/devtools/front_end/main/module.json
+++ b/Source/devtools/front_end/main/module.json
@@ -143,22 +143,6 @@
             ]
         },
         {
-            "type": "@WebInspector.ActionDelegate",
-            "actionId": "main.toggle-device-mode",
-            "className": "WebInspector.AdvancedApp.ToggleDeviceModeActionDelegate",
-            "condition": "can_dock",
-            "bindings": [
-                {
-                    "platform": "windows,linux",
-                    "shortcut": "Shift+Ctrl+M"
-                },
-                {
-                    "platform": "mac",
-                    "shortcut": "Shift+Meta+M"
-                }
-            ]
-        },
-        {
             "type": "drawer-view",
             "name": "rendering",
             "title": "Rendering",
@@ -174,13 +158,6 @@
         },
         {
             "type": "@WebInspector.ToolbarItem.Provider",
-            "className": "WebInspector.AdvancedApp.EmulationButtonProvider",
-            "condition": "can_dock",
-            "order": 1,
-            "location": "main-toolbar-left"
-        },
-        {
-            "type": "@WebInspector.ToolbarItem.Provider",
             "className": "WebInspector.Main.WarningErrorCounter",
             "order": 1,
             "location": "main-toolbar-right"