Allow execution of JavaScript in Distiller pages.

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/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 2189 matching lines @@
   // are received from the renderer to prevent abuse.
   if (request_params.page_state.IsValid()) {
     render_view_host_->GrantFileAccessFromPageState(request_params.page_state);
   }
 }
 
 bool RenderFrameHostImpl::CanExecuteJavaScript() {
   return g_allow_injecting_javascript ||
          !frame_tree_node_->current_url().is_valid() ||
          frame_tree_node_->current_url().SchemeIs(kChromeDevToolsScheme) ||
+         frame_tree_node_->current_url().SchemeIs(kChromeDistillerScheme) ||
          ChildProcessSecurityPolicyImpl::GetInstance()->HasWebUIBindings(
              GetProcess()->GetID()) ||
          // It's possible to load about:blank in a Web UI renderer.
          // See http://crbug.com/42547
          (frame_tree_node_->current_url().spec() == url::kAboutBlankURL) ||
          // InterstitialPageImpl should be the only case matching this.
          (delegate_->GetAsWebContents() == nullptr);
 }
 
 }  // namespace content