BrowserPlugin: Simplify content/public API

content/public/browser/browser_plugin_guest_manager_delegate.cc

Index: content/public/browser/browser_plugin_guest_manager_delegate.cc
diff --git a/content/public/browser/browser_plugin_guest_manager_delegate.cc b/content/public/browser/browser_plugin_guest_manager_delegate.cc
index 369a23d9b4d7b19196b6b5a551b9ce8f68ad3c2a..43012be63d70975618fd918ed312e28ebe7a78d4 100644
--- a/content/public/browser/browser_plugin_guest_manager_delegate.cc
+++ b/content/public/browser/browser_plugin_guest_manager_delegate.cc
@@ -10,24 +10,6 @@ int BrowserPluginGuestManagerDelegate::GetNextInstanceID() {
   return 0;
 }
 
-WebContents* BrowserPluginGuestManagerDelegate::GetGuestByInstanceID(
-    int guest_instance_id,
-    int embedder_render_process_id) {
-  return NULL;
-}
-
-bool BrowserPluginGuestManagerDelegate::CanEmbedderAccessInstanceIDMaybeKill(
-    int embedder_render_process_id,
-    int guest_instance_id) {
-  return false;
-}
-
-bool BrowserPluginGuestManagerDelegate::CanEmbedderAccessInstanceID(
-    int embedder_render_process_id,
-    int guest_instance_id) {
-  return false;
-}
-
 content::SiteInstance* BrowserPluginGuestManagerDelegate::GetGuestSiteInstance(
     const GURL& guest_site) {
   return NULL;