Update generation strings according to UI review comments.

chrome/app/google_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are specific to
 Google Chrome. These strings will be translated for each locale that Google
 Chrome supports. If you update this file, be sure also to update
 chromium_strings.grd. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/google_chrome_strings.h" type="rc_header">
@@ skipping 348 matching lines @@
       <message name="IDS_CRASH_RECOVERY_TITLE" desc="Title of dialog shown when the browser crashes.">
         Google Chrome
       </message>
       <if expr="is_win">
         <message name="IDS_CRASH_RECOVERY_CONTENT" desc="Text content telling the user the browser has crashed.">
           Whoa! Google Chrome has crashed. Relaunch now?
         </message>
       </if>
       <!-- Password generation strings -->
       <message name="IDS_PASSWORD_GENERATION_PROMPT" desc="Autofill dropdown text describing password generation. The link text is a separate string in the translation console and appears here as placeholder text.">
-        Chrome will store this with <ph name="SAVED_PASSWORD_LINK">$1<ex>Google Smart Lock for Passwords</ex></ph> and remember it the next time you need it.
+        Chrome will save this password with <ph name="SAVED_PASSWORD_LINK">$1<ex>Google Smart Lock</ex></ph>. You don’t have to remember it.
       </message>
       <message name="IDS_PASSWORD_GENERATION_SUGGESTION" desc="Text shown next to a generated password describing it as a suggestion.">
-        Use password generated by Chrome
+        Use a strong password generated by Chrome
       </message>
       <message name="IDS_PASSWORD_MANAGER_TITLE_BRAND" desc="The product name used in the title of the password bubble.">
         Google Chrome
       </message>
       <if expr="is_macosx">
         <message name="IDS_PASSWORDS_PAGE_AUTHENTICATION_PROMPT" desc="Text for the dialog box that prompts the user for their OS account password before revealing plaintext passwords on the password page.">
           Google Chrome is trying to show passwords.
         </message>
       </if>
       <if expr="is_win">
@@ skipping 865 matching lines @@
         <message name="IDS_WIN10_WELCOME_PIN_SUBHEADING" desc="A subheading on a section which gives instructions on how to pin Chrome to the Windows 10 taskbar.">
           Pin Chrome to your taskbar
         </message>
         <message name="IDS_WIN10_WELCOME_SELECT" desc="An instruction asking the user to select Chrome from an external list of apps.">
           Select <ph name="SMALL_PRODUCT_LOGO">&lt;div class="logo-small"&gt;&lt;/div&gt;</ph> <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>Google Chrome<ph name="END_BOLD">&lt;/strong&gt;</ph>
         </message>
       </if>
     </messages>
   </release>
 </grit>