Added group policies to enable/disable importing of data from other browsers.

chrome/browser/resources/options/import_data_overlay.js

Index: chrome/browser/resources/options/import_data_overlay.js
diff --git a/chrome/browser/resources/options/import_data_overlay.js b/chrome/browser/resources/options/import_data_overlay.js
index 71c8b42ff2930f70d420fb6f7f320dd1e9c1c08b..0f8675e4af73fffa2e93d21a953054c5c168807e 100644
--- a/chrome/browser/resources/options/import_data_overlay.js
+++ b/chrome/browser/resources/options/import_data_overlay.js
@@ -90,8 +90,9 @@ cr.define('options', function() {
     setControlsSensitive_: function(sensitive) {
       var checkboxes =
           document.querySelectorAll('#import-checkboxes input[type=checkbox]');
-      for (var i = 0; i < checkboxes.length; i++)
+      for (var i = 0; i < checkboxes.length; i++) {

[James Hawkins, 2011/08/02 17:51:43]

Remove braces (no braces for single line blocks).

[simo, 2011/08/03 08:31:44]

Done.

         this.setUpCheckboxState_(checkboxes[i], sensitive);
+      }
       $('import-data-commit').disabled = !sensitive;
     },
 
@@ -102,8 +103,7 @@ cr.define('options', function() {
      * @private
      */
     setUpCheckboxState_: function(checkbox, enabled) {
-      checkbox.disabled = !enabled;
-      checkbox.checked = enabled;
+       checkbox.setDisabled("noProfileData", !enabled);
     },
 
     /**
@@ -118,8 +118,8 @@ cr.define('options', function() {
       var importOptions = ['history', 'favorites', 'passwords', 'search'];
       for (var i = 0; i < importOptions.length; i++) {
         var checkbox = $('import-' + importOptions[i]);
-        this.setUpCheckboxState_(checkbox,
-            browserProfile ? browserProfile[importOptions[i]] : false);
+        var enable = browserProfile && browserProfile[importOptions[i]];
+        this.setUpCheckboxState_(checkbox, enable);
       }
     },
 
@@ -152,6 +152,25 @@ cr.define('options', function() {
         this.validateCommitButton_();
       }
     },
+
+    /**
+    * Clear import prefs set when user checks/unchecks a checkbox so that each
+    * checkbox goes back to the default "checked" state (or alternatively, to
+    * the state set by a recommended policy).
+    * @private
+    */
+    clearUserPrefs_: function() {
+      var importPrefs = ['import_history',
+                         'import_bookmarks',
+                         'import_saved_passwords',
+                         'import_search_engine'];
+      for (var i = 0; i < importPrefs.length; i++)
+        Preferences.clearPref(importPrefs[i], undefined);
+    },
+  };
+
+  ImportDataOverlay.clearUserPrefs = function() {
+    ImportDataOverlay.getInstance().clearUserPrefs_();
   };
 
   /**
@@ -167,13 +186,15 @@ cr.define('options', function() {
    * @param {boolean} state True if an import operation is in progress.
    */
   ImportDataOverlay.setImportingState = function(state) {
+    var checkboxes =
+        document.querySelectorAll('#import-checkboxes input[type=checkbox]');
     if (state) {

[James Hawkins, 2011/08/02 17:51:43]

Get rid of the if/else and transform this to:

for (var i = 0; i < checkboxes.length; i++)
  checkboxes[i].setDisabled("Importing", state);

Don't forget to remove the braces.

[simo, 2011/08/03 08:31:44]

Done.

-      var checkboxes =
-          document.querySelectorAll('#import-checkboxes input[type=checkbox]');
       for (var i = 0; i < checkboxes.length; i++) {
-        checkboxes[i].disabled = true;
+        checkboxes[i].setDisabled("Importing", true);
       }
     } else {
+      for (var i = 0; i < checkboxes.length; i++)
+        checkboxes[i].setDisabled("Importing", false);
       ImportDataOverlay.getInstance().updateCheckboxes_();
     }
     $('import-browsers').disabled = state;
@@ -185,6 +206,7 @@ cr.define('options', function() {
    * Remove the import overlay from display.
    */
   ImportDataOverlay.dismiss = function() {
+    ImportDataOverlay.clearUserPrefs();
     OptionsPage.closeOverlay();
   };