Strings for new Chrome Cleanup prompt and Web UI

chrome/app/google_chrome_strings.grd

Index: chrome/app/google_chrome_strings.grd
diff --git a/chrome/app/google_chrome_strings.grd b/chrome/app/google_chrome_strings.grd
index 4e7e26ba8ed8a482c63bf611c0d8e694a0596083..30e95b3d9eb72b55f69dd3987ef6033bd0eb6a2c 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -775,6 +775,16 @@ Signing in anyway will merge Chrome information like bookmarks, history, and oth
         </message>
       </if>
 
+      <!-- Chrome Cleanup prompt and web UI -->
+      <if expr="is_win">
+        <message name="IDS_CHROME_CLEANUP_PROMPT_EXPLANATION" desc="Description in the Chrome Cleanup dialog that Chrome browser shows when unwanted software, like ad injectors or software that changes the user's settings without their knowledge, is found on the user's computer. Appears under the title asking 'Remove harmful software?' Actor is Chrome; we are asking, Do you want Chrome to remove harmful software? 'it' is harmful software. User has the option of clicking 'Remove' to proceed with a cleanup, or 'Details' to see more details. ">
+          Chrome found harmful software on your computer. Chrome can remove it and restore your settings to make your browser work normally again.
+        </message>
+        <message name="IDS_CHROME_CLEANUP_WEBUI_EXPLANATION" desc="Description in the Chrome Cleanup dialog that Chrome browser shows when unwanted software, like ad injectors or software that changes the user's settings without their knowledge, is found on the user's computer. Appears under the title asking 'Remove harmful software?' Actor is Chrome; we are asking, Do you want Chrome to remove harmful software? 'it' is harmful software. User has the option of clicking 'Remove' to proceed with a cleanup, or 'Details' to see more details. ">
+          Chrome found harmful software on your computer. Chrome can remove it and restore your settings to make your browser work normally again.
+        </message>
+      </if>
+
       <!-- Sync/sign-in error messages -->
       <if expr="not chromeos">
         <message name="IDS_SYNC_PASSPHRASE_ERROR_BUBBLE_VIEW_MESSAGE" desc="Message in the sync error bubble view when the user needs to update their sync passphrase.">