[Icons NTP] Add a flag to enable large icons on the NTP.

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1105 matching lines @@
   {
     "scroll-end-effect",
     IDS_FLAGS_SCROLL_END_EFFECT_NAME,
     IDS_FLAGS_SCROLL_END_EFFECT_DESCRIPTION,
     kOsCrOS,
     ENABLE_DISABLE_VALUE_TYPE_AND_VALUE(
         switches::kScrollEndEffect, "1",
         switches::kScrollEndEffect, "0")
   },
   {
+    "enable-icon-ntp",
+    IDS_FLAGS_ENABLE_ICON_NTP_NAME,
+    IDS_FLAGS_ENABLE_ICON_NTP_DESCRIPTION,
+    kOsAndroid | kOsMac | kOsWin | kOsLinux | kOsCrOS,
+    ENABLE_DISABLE_VALUE_TYPE(switches::kEnableIconNtp,
+                              switches::kDisableIconNtp)
+  },
+  {
     "enable-touch-drag-drop",
     IDS_FLAGS_ENABLE_TOUCH_DRAG_DROP_NAME,
     IDS_FLAGS_ENABLE_TOUCH_DRAG_DROP_DESCRIPTION,
     kOsWin | kOsCrOS,
     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableTouchDragDrop,
                               switches::kDisableTouchDragDrop)
   },
   {
     "enable-touch-editing",
     IDS_FLAGS_ENABLE_TOUCH_EDITING_NAME,
@@ skipping 1723 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags