Implement overscroll support for the virtual keyboard.

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 <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 1312 matching lines @@
 #endif
 #if defined(OS_CHROMEOS)
   {
     "enable-virtual-keyboard",
     IDS_FLAGS_ENABLE_VIRTUAL_KEYBOARD_NAME,
     IDS_FLAGS_ENABLE_VIRTUAL_KEYBOARD_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(keyboard::switches::kEnableVirtualKeyboard)
   },
   {
+    "enable-virtual-keyboard-overscroll",
+    IDS_FLAGS_ENABLE_VIRTUAL_KEYBOARD_OVERSCROLL_NAME,
+    IDS_FLAGS_ENABLE_VIRTUAL_KEYBOARD_OVERSCROLL_DESCRIPTION,
+    kOsCrOS,
+    ENABLE_DISABLE_VALUE_TYPE(
+        keyboard::switches::kEnableVirtualKeyboardOverscroll,
+        keyboard::switches::kDisableVirtualKeyboardOverscroll)
+  },
+  {
     "enable-swipe-selection",
     IDS_FLAGS_ENABLE_SWIPE_SELECTION_NAME,
     IDS_FLAGS_ENABLE_SWIPE_SELECTION_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(keyboard::switches::kEnableSwipeSelection)
   },
   {
     "enable-input-view",
     IDS_FLAGS_ENABLE_INPUT_VIEW_NAME,
     IDS_FLAGS_ENABLE_INPUT_VIEW_DESCRIPTION,
@@ skipping 992 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags