Remove page IDs from three WebContentsObserver APIs that don't need it.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/user_metrics_action.h"
@@ skipping 341 matching lines @@
 void RenderFrameHostImpl::OnOpenURL(
     const FrameHostMsg_OpenURL_Params& params) {
   GURL validated_url(params.url);
   GetProcess()->FilterURL(false, &validated_url);
 
   frame_tree_node_->navigator()->RequestOpenURL(
       this, validated_url, params.referrer, params.disposition,
       params.should_replace_current_entry, params.user_gesture);
 }
 
-void RenderFrameHostImpl::OnDocumentOnLoadCompleted(
-    int32 page_id) {
+void RenderFrameHostImpl::OnDocumentOnLoadCompleted() {
   // This message is only sent for top-level frames. TODO(avi): when frame tree
   // mirroring works correctly, add a check here to enforce it.
-  delegate_->DocumentOnLoadCompleted(this, page_id);
+  delegate_->DocumentOnLoadCompleted(this);
 }
 
 void RenderFrameHostImpl::OnDidStartProvisionalLoadForFrame(
     int parent_routing_id,
     const GURL& url) {
   frame_tree_node_->navigator()->DidStartProvisionalLoad(
       this, parent_routing_id, url);
 }
 
 void RenderFrameHostImpl::OnDidFailProvisionalLoadWithError(
@@ skipping 479 matching lines @@
   cancel_notification_callbacks_.erase(notification_id);
 }
 
 void RenderFrameHostImpl::DesktopNotificationPermissionRequestDone(
     int callback_context) {
   Send(new DesktopNotificationMsg_PermissionRequestDone(
       routing_id_, callback_context));
 }
 
 }  // namespace content