Add flag to enable experimental features for input view.

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 1235 matching lines @@
     SINGLE_VALUE_TYPE(keyboard::switches::kEnableSwipeSelection)
   },
   {
     "enable-input-view",
     IDS_FLAGS_ENABLE_INPUT_VIEW_NAME,
     IDS_FLAGS_ENABLE_INPUT_VIEW_DESCRIPTION,
     kOsCrOS,
     ENABLE_DISABLE_VALUE_TYPE(keyboard::switches::kEnableInputView,
                               keyboard::switches::kDisableInputView)
   },
+  {
+    "enable-experimental-input-view-features",
+    IDS_FLAGS_ENABLE_EXPERIMENTAL_INPUT_VIEW_FEATURES_NAME,
+    IDS_FLAGS_ENABLE_EXPERIMENTAL_INPUT_VIEW_FEATURES_DESCRIPTION,
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(keyboard::switches::kEnableExperimentalInputViewFeatures)
+  },
 #endif
   {
     "enable-simple-cache-backend",
     IDS_FLAGS_ENABLE_SIMPLE_CACHE_BACKEND_NAME,
     IDS_FLAGS_ENABLE_SIMPLE_CACHE_BACKEND_DESCRIPTION,
     kOsWin | kOsMac | kOsLinux | kOsCrOS,
     MULTI_VALUE_TYPE(kSimpleCacheBackendChoices)
   },
   {
     "enable-tcp-fast-open",
@@ skipping 1075 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags