Add a minimal Security panel to DevTools (behind a hidden experiment).

Source/devtools/devtools.gypi

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #         * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #         * Redistributions in binary form must reproduce the above
@@ skipping 134 matching lines @@
             'front_end/sdk/LayerTreeModel.js',
             'front_end/sdk/NetworkLog.js',
             'front_end/sdk/NetworkManager.js',
             'front_end/sdk/NetworkRequest.js',
             'front_end/sdk/PaintProfiler.js',
             'front_end/sdk/RemoteObject.js',
             'front_end/sdk/Resource.js',
             'front_end/sdk/ResourceTreeModel.js',
             'front_end/sdk/RuntimeModel.js',
             'front_end/sdk/Script.js',
+            'front_end/sdk/SecurityManager.js',
             'front_end/sdk/ServiceWorkerManager.js',
             'front_end/sdk/SourceMap.js',
             'front_end/sdk/Target.js',
             'front_end/sdk/TracingManager.js',
             'front_end/sdk/TracingModel.js',
             'front_end/sdk/WorkerManager.js',
         ],
         'devtools_workspace_js_files': [
             'front_end/workspace/ExcludedFolderManager.js',
             'front_end/workspace/FileManager.js',
@@ skipping 145 matching lines @@
             'front_end/extensions/module.json',
             'front_end/heap_snapshot_worker/module.json',
             'front_end/host/module.json',
             'front_end/layers/module.json',
             'front_end/main/module.json',
             'front_end/network/module.json',
             'front_end/platform/module.json',
             'front_end/profiler/module.json',
             'front_end/promises/module.json',
             'front_end/resources/module.json',
+            'front_end/security/module.json',
             'front_end/screencast/module.json',
             'front_end/script_formatter_worker/module.json',
             'front_end/sdk/module.json',
             'front_end/settings/module.json',
             'front_end/source_frame/module.json',
             'front_end/sources/module.json',
             'front_end/snippets/module.json',
             'front_end/temp_storage_shared_worker/module.json',
             'front_end/timeline/module.json',
             'front_end/toolbox_bootstrap/module.json',
@@ skipping 167 matching lines @@
             'front_end/resources/DOMStorageItemsView.js',
             'front_end/resources/FileContentView.js',
             'front_end/resources/FileSystemModel.js',
             'front_end/resources/FileSystemView.js',
             'front_end/resources/IndexedDBViews.js',
             'front_end/resources/IndexedDBModel.js',
             'front_end/resources/ResourcesPanel.js',
             'front_end/resources/ServiceWorkerCacheViews.js',
             'front_end/resources/ServiceWorkersView.js',
         ],
+        'devtools_security_js_files': [
+            'front_end/security/securityPanel.css',
+            'front_end/security/SecurityPanel.js',
+        ],
         'devtools_script_formatter_worker_js_files': [
             'front_end/acorn/acorn.js',
             'front_end/cm/css.js',
             'front_end/cm/headlesscodemirror.js',
             'front_end/cm/htmlmixed.js',
             'front_end/cm/xml.js',
             'front_end/platform/utilities.js',
             'front_end/script_formatter_worker/AcornTokenizer.js',
             'front_end/script_formatter_worker/CSSFormatter.js',
             'front_end/script_formatter_worker/ESTreeWalker.js',
@@ skipping 143 matching lines @@
             '<@(devtools_components_lazy_js_files)',
             '<@(devtools_console_js_files)',
             '<@(devtools_elements_js_files)',
             '<@(devtools_extensions_js_files)',
             '<@(devtools_heap_snapshot_worker_js_files)',
             '<@(devtools_layers_js_files)',
             '<@(devtools_network_js_files)',
             '<@(devtools_profiler_js_files)',
             '<@(devtools_promises_js_files)',
             '<@(devtools_resources_js_files)',
+            '<@(devtools_security_js_files)',
             '<@(devtools_screencast_js_files)',
             '<@(devtools_script_formatter_worker_js_files)',
             '<@(devtools_settings_js_files)',
             '<@(devtools_source_frame_js_files)',
             '<@(devtools_sources_js_files)',
             '<@(devtools_snippets_js_files)',
             '<@(devtools_temp_storage_shared_worker_js_files)',
             '<@(devtools_timeline_js_files)',
             '<@(devtools_ui_lazy_js_files)',
         ],
@@ skipping 42 matching lines @@
             'front_end/Images/resourceDocumentIcon.png',
             'front_end/Images/resourceDocumentIconSmall.png',
             'front_end/Images/resourceJSIcon.png',
             'front_end/Images/resourcePlainIcon.png',
             'front_end/Images/resourcePlainIconSmall.png',
             'front_end/Images/resourcesTimeGraphIcon.png',
             'front_end/Images/responsiveDesign.png',
             'front_end/Images/responsiveDesign_2x.png',
             'front_end/Images/searchNext.png',
             'front_end/Images/searchPrev.png',
+            'front_end/Images/securityStateHttp_2x.png',
+            'front_end/Images/securityStateHttp.png',
+            'front_end/Images/securityStateInsecure_2x.png',
+            'front_end/Images/securityStateInsecure.png',
+            'front_end/Images/securityStateSecure_2x.png',
+            'front_end/Images/securityStateSecure.png',
+            'front_end/Images/securityStateWarning_2x.png',
+            'front_end/Images/securityStateWarning.png',
             'front_end/Images/serviceWorker.svg',
             'front_end/Images/sessionStorage.png',
             'front_end/Images/settingsListRemove.png',
             'front_end/Images/settingsListRemove_2x.png',
             'front_end/Images/speech.png',
             'front_end/Images/spinner.svg',
             'front_end/Images/toolbarButtonGlyphs.png',
             'front_end/Images/toolbarButtonGlyphs_2x.png',
             'front_end/Images/toolbarResizerHorizontal.png',
             'front_end/Images/toolbarResizerVertical.png',
             'front_end/Images/thumbActiveHoriz.png',
             'front_end/Images/thumbActiveVert.png',
             'front_end/Images/thumbHoriz.png',
             'front_end/Images/thumbHoverHoriz.png',
             'front_end/Images/thumbHoverVert.png',
             'front_end/Images/thumbVert.png',
             'front_end/Images/toolbarItemSelected.png',
             'front_end/Images/touchCursor.png',
             'front_end/Images/touchCursor_2x.png',
             'front_end/Images/updateServiceWorker.svg',
         ],
         'devtools_extension_api_files': [
             'front_end/extensions/ExtensionAPI.js',
         ],
     },
 }