App list: Infrastructure now supports multiple custom launcher pages.

chrome/browser/ui/app_list/app_list_view_delegate.h

Index: chrome/browser/ui/app_list/app_list_view_delegate.h
diff --git a/chrome/browser/ui/app_list/app_list_view_delegate.h b/chrome/browser/ui/app_list/app_list_view_delegate.h
index 31899f94cee44f5a3f4781e040982dd7d4a59a70..ec67e7489a809580c637413c31ac2702db49a107 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.h
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.h
@@ -11,6 +11,7 @@
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/profiles/profile_info_cache_observer.h"
@@ -89,7 +90,8 @@ class AppListViewDelegate : public app_list::AppListViewDelegate,
       const base::FilePath& profile_path) OVERRIDE;
 #if defined(TOOLKIT_VIEWS)
   virtual views::View* CreateStartPageWebView(const gfx::Size& size) OVERRIDE;
-  virtual views::View* CreateCustomPageWebView(const gfx::Size& size) OVERRIDE;
+  virtual std::vector<views::View*> CreateCustomPageWebViews(
+      const gfx::Size& size) OVERRIDE;
 #endif
   virtual bool IsSpeechRecognitionEnabled() OVERRIDE;
   virtual const Users& GetUsers() const OVERRIDE;
@@ -154,8 +156,8 @@ class AppListViewDelegate : public app_list::AppListViewDelegate,
   // this instance can be removed as an observer on its destruction.
   ScopedObserver<SigninManagerBase, AppListViewDelegate> scoped_observer_;
 
-  // Window contents of the additional custom launcher page. May be NULL.
-  scoped_ptr<apps::CustomLauncherPageContents> custom_page_contents_;
+  // Window contents of additional custom launcher pages.
+  ScopedVector<apps::CustomLauncherPageContents> custom_page_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };