Added --custom-launcher-page. Adds a page to the experimental launcher.

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 b6df54d6811b3fe31f1abebb000709f94469ff3c..b5dba63cf63184afe7159216cadc4cd31ce2e1b0 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.h
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.h
@@ -32,6 +32,10 @@ namespace base {
 class FilePath;
 }
 
+namespace content {
+class WebContents;
+}
+
 namespace gfx {
 class ImageSkia;
 }
@@ -85,6 +89,7 @@ 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;
 #endif
   virtual bool IsSpeechRecognitionEnabled() OVERRIDE;
   virtual const Users& GetUsers() const OVERRIDE;
@@ -149,6 +154,9 @@ class AppListViewDelegate : public app_list::AppListViewDelegate,
   // this instance can be removed as an observer on its destruction.
   ScopedObserver<SigninManagerBase, AppListViewDelegate> scoped_observer_;
 
+  // Contents of the additional custom launcher page. May be NULL.
+  scoped_ptr<content::WebContents> custom_page_web_contents_;
+
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };