First set of changes for M7 NTP.

chrome/browser/dom_ui/shown_sections_handler.cc

Index: chrome/browser/dom_ui/shown_sections_handler.cc
diff --git a/chrome/browser/dom_ui/shown_sections_handler.cc b/chrome/browser/dom_ui/shown_sections_handler.cc
index 80c6229f1c578f1c43f77e976e6e316de484ce81..86319da2a172a200d98c57bb3d39e6b83a05361d 100644
--- a/chrome/browser/dom_ui/shown_sections_handler.cc
+++ b/chrome/browser/dom_ui/shown_sections_handler.cc
@@ -89,7 +89,7 @@ void ShownSectionsHandler::HandleSetShownSections(const ListValue* args) {
 // static
 void ShownSectionsHandler::RegisterUserPrefs(PrefService* pref_service) {
   pref_service->RegisterIntegerPref(prefs::kNTPShownSections,
-                                    THUMB | RECENT | TIPS | SYNC);
+                                    THUMB | RECENT | TIPS | SYNC | APPS);
 }
 
 // static
@@ -113,6 +113,12 @@ void ShownSectionsHandler::MigrateUserPrefs(PrefService* pref_service,
     changed = true;
   }
 
+  if (old_pref_version < 3) {
+    // We reset people to only see apps by default in v3.

[Miranda Callahan, 2010/08/26 02:57:08]

Should this "only" be in this spot? Or should it be "We only reset people to see
apps by default in v3." ?

+    shown_sections = APPS;
+    changed = true;
+  }
+
   if (changed)
     pref_service->SetInteger(prefs::kNTPShownSections, shown_sections);
 }