Force reset of RenderViewImpl zoom level.

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 3356 matching lines @@
         ZoomFactorToZoomLevel(kMaximumZoomFactor));
 
     // Set zoom level, but don't do it for full-page plugin since they don't use
     // the same zoom settings.
     HostZoomLevels::iterator host_zoom =
         render_view_->host_zoom_levels_.find(GURL(request.url()));
     if (render_view_->webview()->mainFrame()->document().isPluginDocument()) {
       // Reset the zoom levels for plugins.
       render_view_->webview()->setZoomLevel(0);
     } else {
-      if (host_zoom != render_view_->host_zoom_levels_.end())
+      if (host_zoom != render_view_->host_zoom_levels_.end()) {
         render_view_->webview()->setZoomLevel(host_zoom->second);
+      } else {
+        // If the url was not found, we need to reset in case we are re-using
+        // an existing RenderViewImpl, e.g. to show a network error page.
+        render_view_->webview()->setZoomLevel(0);
+      }
     }
 
     if (host_zoom != render_view_->host_zoom_levels_.end()) {
       // This zoom level was merely recorded transiently for this load.  We can
       // erase it now.  If at some point we reload this page, the browser will
       // send us a new, up-to-date zoom level.
       render_view_->host_zoom_levels_.erase(host_zoom);
     }
 
     // Update contents MIME type for main frame.
@@ skipping 684 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content