Update generation strings according to UI review comments.

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 If you update this file, be sure also to update google_chrome_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/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
@@ skipping 347 matching lines @@
       <message name="IDS_CRASH_RECOVERY_TITLE" desc="Title of dialog shown when the browser crashes.">
         Chromium
       </message>
       <if expr="is_win">
         <message name="IDS_CRASH_RECOVERY_CONTENT" desc="Text content telling the user the browser has crashed.">
           Whoa! Chromium 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.">
-        Chromium 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.
+        Chromium 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 Chromium
+        Use a strong password generated by Chromium
       </message>
       <message name="IDS_PASSWORD_MANAGER_TITLE_BRAND" desc="The product name used in the title of the password bubble.">
         Chromium
       </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.">
           Chromium is trying to show passwords.
         </message>
       </if>
       <if expr="is_win">
@@ skipping 864 matching lines @@
         <message name="IDS_WIN10_WELCOME_PIN_SUBHEADING" desc="A subheading on a section which gives instructions on how to pin Chromium to the Windows 10 taskbar.">
           Pin Chromium to your taskbar
         </message>
         <message name="IDS_WIN10_WELCOME_SELECT" desc="An instruction asking the user to select Chromium 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>Chromium<ph name="END_BOLD">&lt;/strong&gt;</ph>
         </message>
       </if>
     </messages>
   </release>
 </grit>