Allow zooming error pages.

content/browser/frame_host/navigation_controller_impl.cc

Index: content/browser/frame_host/navigation_controller_impl.cc
diff --git a/content/browser/frame_host/navigation_controller_impl.cc b/content/browser/frame_host/navigation_controller_impl.cc
index 4be5a3ce4a009f07a74d87de92730bec3740c2b7..7a182275e8517de0c821ece1e5c0efa7148ade8f 100644
--- a/content/browser/frame_host/navigation_controller_impl.cc
+++ b/content/browser/frame_host/navigation_controller_impl.cc
@@ -27,6 +27,7 @@
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
+#include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/notification_service.h"
@@ -1060,8 +1061,10 @@ void NavigationControllerImpl::RendererDidNavigateToNewPage(
     update_virtual_url = needs_update;
   }
 
-  if (params.url_is_unreachable)
+  if (params.url_is_unreachable) {
     new_entry->set_page_type(PAGE_TYPE_ERROR);
+    HostZoomMap::SendErrorPageZoomLevelRefresh(GetWebContents());

[Charlie Reis, 2014/10/28 16:36:21]

This doesn't seem to belong here, since zoom is unrelated to the rest of this
code.  ZoomController is a WebContentsObserver, so perhaps it belongs there?

[wjmaclean, 2014/10/28 17:37:04]

Done.

+  }
   new_entry->SetURL(params.url);
   if (update_virtual_url)
     UpdateVirtualURLToURL(new_entry, params.url);