Add new flag for experimental app banners.

chrome/browser/flag_descriptions.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/flag_descriptions.h"
 
 namespace flag_descriptions {
 
 const char kBrowserSideNavigationName[] = "Enable browser side navigation";
 
@@ skipping 341 matching lines @@
 const char kInProductHelpDemoModeChoiceName[] = "In-Product Help Demo Mode";
 
 const char kInProductHelpDemoModeChoiceDescription[] =
     "Selects the In-Product Help demo mode.";
 
 const char kColorCorrectRenderingName[] = "Color correct rendering";
 
 const char kColorCorrectRenderingDescription[] =
     "Enables color correct rendering of web content.";
 
+const char kExperimentalAppBannersName[] = "Experimental app banners";
+
+const char kExperimentalAppBannersDescription[] =
+    "Enables a new experimental app banner flow and UI";
+
 const char kExperimentalCanvasFeaturesName[] = "Experimental canvas features";
 
 const char kExperimentalCanvasFeaturesDescription[] =
     "Enables the use of experimental canvas features which are still in "
     "development.";
 
 const char kAccelerated2dCanvasName[] = "Accelerated 2D canvas";
 
 const char kAccelerated2dCanvasDescription[] =
     "Enables the use of the GPU to perform 2d canvas rendering instead of "
@@ skipping 2904 matching lines @@
     "in non-sticky mode (do not change work area in non-sticky mode).";
 
 const char kUiDevToolsName[] = "Enable native UI inspection";
 const char kUiDevToolsDescription[] =
     "Enables inspection of native UI elements. For local inspection use "
     "chrome://inspect#other";
 
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace flag_descriptions