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

content/browser/renderer_host/render_view_host_impl.cc

 // Copyright (c) 2012 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/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1220 matching lines @@
 }
 
 void RenderViewHostImpl::OnDidChangeLoadProgress(double load_progress) {
   delegate_->DidChangeLoadProgress(load_progress);
 }
 
 void RenderViewHostImpl::OnDocumentAvailableInMainFrame() {
   delegate_->DocumentAvailableInMainFrame(this);
 }
 
-void RenderViewHostImpl::OnDocumentOnLoadCompletedInMainFrame(
-    int32 page_id) {
-  delegate_->DocumentOnLoadCompletedInMainFrame(this, page_id);
+void RenderViewHostImpl::OnDocumentOnLoadCompletedInMainFrame() {
+  delegate_->DocumentOnLoadCompletedInMainFrame(this);
 }
 
 void RenderViewHostImpl::OnToggleFullscreen(bool enter_fullscreen) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   delegate_->ToggleFullscreenMode(enter_fullscreen);
   // We need to notify the contents that its fullscreen state has changed. This
   // is done as part of the resize message.
   WasResized();
 }
 
@@ skipping 478 matching lines @@
   return true;
 }
 
 void RenderViewHostImpl::AttachToFrameTree() {
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->ResetForMainFrameSwap();
 }
 
 }  // namespace content