Add entries for mouse/touchpad speed.

BUG=119647
TEST=NONE
Review URL: https://chromiumcodereview.appspot.com/9791077

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@129466 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/generated_resources.grd

@@ -12666,6 +12666,12 @@ Some features may be unavailable.  Please check that the profile exists and you
       <message name="IDS_OPTIONS2_DEVICE_GROUP_POINTER_SECTION">
         Pointer speed:
       </message>
+      <message name="IDS_OPTIONS2_SETTINGS_MOUSE_SPEED_DESCRIPTION">
+        Mouse speed:
+      </message>
+      <message name="IDS_OPTIONS2_SETTINGS_TOUCHPAD_SPEED_DESCRIPTION">
+        Touchpad speed:
+      </message>
       <message name="IDS_OPTIONS_DEVICE_GROUP_POINTER_SETTINGS_BUTTON_TITLE">
         Pointer settings...
       </message>