Adds a modal dialog implementation of the settings reset prompt.

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 1f017021303c017e263bd283e9d7276f9604943e..a152643f9f5d8000c6a96d591a97576944e7adec 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -778,15 +778,33 @@ Signing in anyway will merge Chrome information like bookmarks, history, and oth
       <message name="IDS_SETTINGS_RESET_PROMPT_EXPLANATION_FOR_MULTIPLE_SETTINGS" desc="Text shown in the settings reset dialog explaining that some of the user's settings may have been modified by unwanted software or extensions.">
         The following Chrome settings may have been modified by unwanted software or extensions:
       </message>
-      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_SEARCH_ENGINE" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their search engine.">
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_SEARCH_ENGINE_NO_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their search engine.">
         Do you want to restore Chrome's default search engine?
       </message>
-      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_STARTUP_PAGE" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their startup page.">
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_SEARCH_ENGINE_ONE_EXTENSION" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their search engine.">
+        Do you want to restore Chrome's default search engine? This will also disable one extension.
+      </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_SEARCH_ENGINE_MULTIPLE_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their search engine.">
+        Do you want to restore Chrome's default search engine? This will also disable <ph name="NUM_EXTENSIONS">$1<ex>3</ex></ph> extensions.
+      </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_STARTUP_PAGE_NO_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their startup page.">
         Do you want to restore Chrome's default startup page?
       </message>
-      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_HOMEPAGE" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their homepage.">
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_STARTUP_PAGE_ONE_EXTENSION" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their startup page.">
+        Do you want to restore Chrome's default startup page? This will also disable one extension.
+      </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_STARTUP_PAGE_MULTIPLE_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their startup page.">
+        Do you want to restore Chrome's default startup page? This will also disable <ph name="NUM_EXTENSIONS">$1<ex>3</ex></ph> extensions.
+      </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_HOMEPAGE_NO_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their homepage.">
         Do you want to restore Chrome's default homepage?
       </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_HOMEPAGE_ONE_EXTENSION" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their homepage.">
+        Do you want to restore Chrome's default homepage? This will also disable one extension.
+      </message>
+      <message name="IDS_SETTINGS_RESET_PROMPT_ACTION_EXPLANATION_FOR_HOMEPAGE_MULTIPLE_EXTENSIONS" desc="The settings reset dialog asks users if they want to restore some of their settings to their original default values. This text is shown at the bottom of the dialog when asking if the user wants to reset their homepage.">
+        Do you want to restore Chrome's default homepage? This will also disable <ph name="NUM_EXTENSIONS">$1<ex>3</ex></ph> extensions.
+      </message>
 
       <!-- Sync/sign-in error messages -->
       <if expr="not chromeos">