Update Virtual Keybaord icons.

ui/keyboard/keyboard_util.cc

 // Copyright (c) 2013 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 "ui/keyboard/keyboard_util.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 266 matching lines @@
   }
 }
 
 const GritResourceMap* GetKeyboardExtensionResources(size_t* size) {
   // This looks a lot like the contents of a resource map; however it is
   // necessary to have a custom path for the extension path, so the resource
   // map cannot be used directly.
   static const GritResourceMap kKeyboardResources[] = {
     {"keyboard/layouts/function-key-row.html", IDR_KEYBOARD_FUNCTION_KEY_ROW},
     {"keyboard/images/back.svg", IDR_KEYBOARD_IMAGES_BACK},
-    {"keyboard/images/backspace.svg", IDR_KEYBOARD_IMAGES_BACKSPACE},
+    {"keyboard/images/backspace.png", IDR_KEYBOARD_IMAGES_BACKSPACE},
     {"keyboard/images/brightness-down.svg",
         IDR_KEYBOARD_IMAGES_BRIGHTNESS_DOWN},
     {"keyboard/images/brightness-up.svg", IDR_KEYBOARD_IMAGES_BRIGHTNESS_UP},
     {"keyboard/images/change-window.svg", IDR_KEYBOARD_IMAGES_CHANGE_WINDOW},
     {"keyboard/images/down.svg", IDR_KEYBOARD_IMAGES_DOWN},
     {"keyboard/images/forward.svg", IDR_KEYBOARD_IMAGES_FORWARD},
     {"keyboard/images/fullscreen.svg", IDR_KEYBOARD_IMAGES_FULLSCREEN},
-    {"keyboard/images/hide-keyboard.svg", IDR_KEYBOARD_IMAGES_HIDE_KEYBOARD},
+    {"keyboard/images/hide-keyboard.png", IDR_KEYBOARD_IMAGES_HIDE_KEYBOARD},
     {"keyboard/images/keyboard.svg", IDR_KEYBOARD_IMAGES_KEYBOARD},
     {"keyboard/images/left.svg", IDR_KEYBOARD_IMAGES_LEFT},
     {"keyboard/images/microphone.svg", IDR_KEYBOARD_IMAGES_MICROPHONE},
     {"keyboard/images/microphone-green.svg",
         IDR_KEYBOARD_IMAGES_MICROPHONE_GREEN},
     {"keyboard/images/mute.svg", IDR_KEYBOARD_IMAGES_MUTE},
     {"keyboard/images/reload.svg", IDR_KEYBOARD_IMAGES_RELOAD},
-    {"keyboard/images/return.svg", IDR_KEYBOARD_IMAGES_RETURN},
+    {"keyboard/images/return.png", IDR_KEYBOARD_IMAGES_RETURN},
     {"keyboard/images/right.svg", IDR_KEYBOARD_IMAGES_RIGHT},
     {"keyboard/images/search.svg", IDR_KEYBOARD_IMAGES_SEARCH},
     {"keyboard/images/shift.svg", IDR_KEYBOARD_IMAGES_SHIFT},
     {"keyboard/images/shift-filled.svg", IDR_KEYBOARD_IMAGES_SHIFT_FILLED},
     {"keyboard/images/shutdown.svg", IDR_KEYBOARD_IMAGES_SHUTDOWN},
-    {"keyboard/images/tab.svg", IDR_KEYBOARD_IMAGES_TAB},
+    {"keyboard/images/tab.png", IDR_KEYBOARD_IMAGES_TAB},
     {"keyboard/images/up.svg", IDR_KEYBOARD_IMAGES_UP},
     {"keyboard/images/volume-down.svg", IDR_KEYBOARD_IMAGES_VOLUME_DOWN},
     {"keyboard/images/volume-up.svg", IDR_KEYBOARD_IMAGES_VOLUME_UP},
     {"keyboard/index.html", IDR_KEYBOARD_INDEX},
     {"keyboard/keyboard.js", IDR_KEYBOARD_JS},
     {"keyboard/layouts/numeric.html", IDR_KEYBOARD_LAYOUTS_NUMERIC},
     {"keyboard/layouts/qwerty.html", IDR_KEYBOARD_LAYOUTS_QWERTY},
     {"keyboard/layouts/system-qwerty.html", IDR_KEYBOARD_LAYOUTS_SYSTEM_QWERTY},
     {"keyboard/layouts/spacebar-row.html", IDR_KEYBOARD_SPACEBAR_ROW},
     {"keyboard/manifest.json", IDR_KEYBOARD_MANIFEST},
@@ skipping 23 matching lines @@
 }
 
 void LogKeyboardControlEvent(KeyboardControlEvent event) {
   UMA_HISTOGRAM_ENUMERATION(
       "VirtualKeyboard.KeyboardControlEvent",
       event,
       keyboard::KEYBOARD_CONTROL_MAX);
 }
 
 }  // namespace keyboard