MD Settings: Add mouse settings, update pointer settings

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 1615 matching lines @@
   </message>
   <message name="IDS_SETTINGS_REQUIRES_WEB_STORE_EXTENSION" desc="Sub-label for advanced font settings explaining that an extension from the Web Store is required.">
     Requires extension from the Chrome Web Store
   </message>
 
   <!-- Device Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_DEVICE_TITLE" desc="Name of the settings page which displays device and peripheral settings.">
       Device
     </message>
+    <message name="IDS_SETTINGS_MOUSE_TITLE" desc="In Device Settings, the title of the mouse settings subpage.">
+      Mouse
+    </message>
+    <message name="IDS_SETTINGS_TOUCHPAD_TITLE" desc="In Device Settings, the title of the touchpad settings subpage.">
+      Touchpad
+    </message>
+    <message name="IDS_SETTINGS_MOUSE_AND_TOUCHPAD_TITLE" desc="In Device Settings, the title of the mouse and touchpad settings subpage (when the user has both types of devices).">
+      Mouse and touchpad
+    </message>
+    <message name="IDS_SETTINGS_KEYBOARD_TITLE" desc="In Device Settings, the title of the keyboard settings subpage.">
+      Keyboard
+    </message>
     <!-- Touchpad -->
-    <message name="IDS_SETTINGS_TOUCHPAD_TITLE" desc="In Device Settings, the title of the Touchpad Settings section.">
-      Touchpad settings
-    </message>
     <message name="IDS_SETTINGS_TOUCHPAD_TAP_TO_CLICK_ENABLED_LABEL" desc="In Device Settings, the text next to the checkbox that allows tapping the touchpad to work as a click.">
       Enable tap-to-click
     </message>
+    <message name="IDS_SETTINGS_TOUCHPAD_SPEED_LABEL" desc="In Device Settings, the text next to the slider that sets the speed (sensitivity) of the touchpad.">
+      Touchpad speed
+    </message>
+    <message name="IDS_SETTINGS_POINTER_SPEED_SLOW_LABEL" desc="In Device Settings, the text under the left (less sensitive) side of the slider for the pointer (mouse/touch) speed (sensitivity).">
+      Slow
+    </message>
+    <message name="IDS_SETTINGS_POINTER_SPEED_FAST_LABEL" desc="In Device Settings, the text under the right (more sensitive) side of the slider for the pointer (mouse/touchpad) speed (sensitivity).">
+      Fast
+    </message>
     <message name="IDS_SETTINGS_SCROLL_LABEL" desc="In Device Settings, the title above the radio buttons to choose the scrolling behavior.">
       Scrolling
     </message>
     <message name="IDS_SETTINGS_NATURAL_SCROLL_LABEL" desc="In Device Settings, the text next to the radio button that enables natural scrolling.">
       Australian
     </message>
     <message name="IDS_SETTINGS_TRADITIONAL_SCROLL_LABEL" desc="In Device Settings, the text next to the radio button that enables traditional scrolling.">
       Traditional
     </message>
     <message name="IDS_SETTINGS_NATURAL_SCROLL_LEARN_MORE" desc="In Device Settings, the text for the link next to the Australian (natural) scrolling option; opens a page to learn more about natural scrolling.">
       Learn more
     </message>
+    <!-- Mouse -->
+    <message name="IDS_SETTINGS_MOUSE_SPEED_LABEL" desc="In Device Settings, the text next to the slider that sets the speed (sensitivity) of the mouse.">
+      Mouse speed
+    </message>
+    <message name="IDS_SETTINGS_MOUSE_SWAP_BUTTONS_LABEL" desc="In Device Settings, the text next to the checkbox to set the primary mouse button to the right button instead of the left button.">
+      Swap primary mouse button
+    </message>
     <!-- Keyboard -->
-    <message name="IDS_SETTINGS_KEYBOARD_TITLE" desc="In Device Settings, the title for keyboard settings.">
-      Keyboard settings
-    </message>
     <message name="IDS_SETTINGS_KEYBOARD_KEY_SEARCH" desc="In Device Settings, the label and dropdown list item for the Search key.">
       Search
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_KEY_LEFT_CTRL" desc="In Device Settings, the label and dropdown list item for the Ctrl key.">
       Ctrl
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_KEY_LEFT_ALT" desc="In Device Settings, the label and dropdown list item for the Alt key.">
       Alt
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_KEY_CAPS_LOCK" desc="In Device Settings, the label and dropdown list item for the Caps Lock key.">
@@ skipping 99 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>