Update entry page type to include error pages when appropriate.

chrome/browser/ui/zoom/zoom_controller.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 "chrome/browser/ui/zoom/zoom_controller.h"
 
 #include "chrome/browser/ui/sad_tab.h"
 #include "chrome/browser/ui/zoom/zoom_event_manager.h"
 #include "chrome/browser/ui/zoom/zoom_observer.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/page_zoom.h"
 #include "extensions/common/extension.h"
 #include "grit/theme_resources.h"
 #include "net/base/net_util.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ZoomController);
 
 ZoomController::ZoomController(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       can_show_bubble_(true),
       zoom_mode_(ZOOM_MODE_DEFAULT),
       zoom_level_(1.0),
-      browser_context_(web_contents->GetBrowserContext()) {
+      browser_context_(web_contents->GetBrowserContext()),
+      is_error_page_(false) {
   // TODO(wjmaclean) Make calls to HostZoomMap::GetDefaultForBrowserContext()
   // refer to the webcontents-specific HostZoomMap when that becomes available.
   content::HostZoomMap* host_zoom_map =
       content::HostZoomMap::GetDefaultForBrowserContext(browser_context_);
   zoom_level_ = host_zoom_map->GetDefaultZoomLevel();
 
   zoom_subscription_ = host_zoom_map->AddZoomLevelChangedCallback(
       base::Bind(&ZoomController::OnZoomLevelChanged, base::Unretained(this)));
 
   UpdateState(std::string());
@@ skipping 34 matching lines @@
 
 bool ZoomController::SetZoomLevel(double zoom_level) {
   // An extension did not initiate this zoom change.
   return SetZoomLevelByExtension(zoom_level, NULL);
 }
 
 bool ZoomController::SetZoomLevelByExtension(
     double zoom_level,
     const scoped_refptr<const extensions::Extension>& extension) {
   // Cannot zoom in disabled mode. Also, don't allow changing zoom level on
-  // a crashed tab.
+  // a crashed tab or an error page.
   if (zoom_mode_ == ZOOM_MODE_DISABLED ||
-      !web_contents()->GetRenderViewHost()->IsRenderViewLive())
+      !web_contents()->GetRenderViewHost()->IsRenderViewLive() ||
+      is_error_page_)
     return false;
 
   // Store extension data so that |extension| can be attributed when the zoom
   // change completes. We expect that by the time this function returns that
   // any observers that require this information will have requested it.
   last_extension_ = extension;
 
   // Do not actually rescale the page in manual mode.
   if (zoom_mode_ == ZOOM_MODE_MANUAL) {
     double old_zoom_level = zoom_level_;
@@ skipping 137 matching lines @@
           render_process_id, render_view_id, GetDefaultZoomLevel());
       break;
     }
   }
   // Any event data we've stored should have been consumed by this point.
   DCHECK(!event_data_);
 
   zoom_mode_ = new_mode;
 }
 
+void ZoomController::DidCommitProvisionalLoadForFrame(
+    content::RenderFrameHost* render_frame_host,
+    const GURL& url,
+    bool url_is_unreachable,
+    ui::PageTransition transition_type) {
+  is_error_page_ = url_is_unreachable;
+}
+
 void ZoomController::DidNavigateMainFrame(
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {
   // If the main frame's content has changed, the new page may have a different
   // zoom level from the old one.
   UpdateState(std::string());
 }
 
 void ZoomController::WebContentsDestroyed() {
   // At this point we should no longer be sending any zoom events with this
@@ skipping 34 matching lines @@
   } else {
     // TODO(wjmaclean) Should we consider having HostZoomMap send both old and
     // new zoom levels here?
     double zoom_level = GetZoomLevel();
     ZoomChangedEventData zoom_change_data(
         web_contents(), zoom_level, zoom_level, zoom_mode_, can_show_bubble);
     FOR_EACH_OBSERVER(
         ZoomObserver, observers_, OnZoomChanged(zoom_change_data));
   }
 }