Revert "InstantExtended: Prevent spurious themechanged/mostvisitedchanged events"

chrome/common/instant_types.h

Index: chrome/common/instant_types.h
diff --git a/chrome/common/instant_types.h b/chrome/common/instant_types.h
index e01fd6370144db3b480f99a51f76818e57361e7f..7e08d72947facaa0632b01fac0a17e44950f3659 100644
--- a/chrome/common/instant_types.h
+++ b/chrome/common/instant_types.h
@@ -139,8 +139,6 @@ enum ThemeBackgroundImageTiling {
   THEME_BKGRND_IMAGE_REPEAT,
 };
 
-// Update IsThemeInfoEqual in chrome/renderer/searchbox/searchbox.cc
-// whenever any fields are added/removed.
 struct ThemeBackgroundInfo {
   ThemeBackgroundInfo();
   ~ThemeBackgroundInfo();
@@ -176,8 +174,6 @@ struct ThemeBackgroundInfo {
   bool has_attribution;
 };
 
-// Update AreMostVisitedItemsEqual in chrome/renderer/searchbox/searchbox.cc
-// whenever any fields are added/removed.
 struct InstantMostVisitedItem {
   // The URL of the Most Visited item.
   GURL url;