Replace usage of WebVector::isEmpty with WebVector::empty().

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 <utility>
 #include <vector>
@@ skipping 2031 matching lines @@
 }
 
 void RenderFrameImpl::JavaScriptIsolatedWorldRequest::completed(
     const blink::WebVector<v8::Local<v8::Value>>& result) {
   if (!render_frame_impl_.get()) {
     return;
   }
 
   if (notify_result_) {
     base::ListValue list;
-    if (!result.isEmpty()) {
+    if (!result.empty()) {
       // It's safe to always use the main world context when converting
       // here. V8ValueConverterImpl shouldn't actually care about the
       // context scope, and it switches to v8::Object's creation context
       // when encountered. (from extensions/renderer/script_injection.cc)
       v8::Local<v8::Context> context =
           render_frame_impl_.get()->frame_->mainWorldScriptContext();
       v8::Context::Scope context_scope(context);
       V8ValueConverterImpl converter;
       converter.SetDateAllowed(true);
       converter.SetRegExpAllowed(true);
@@ skipping 4909 matching lines @@
       policy(info.defaultPolicy),
       replaces_current_history_item(info.replacesCurrentHistoryItem),
       history_navigation_in_new_child_frame(
           info.isHistoryNavigationInNewChildFrame),
       client_redirect(info.isClientRedirect),
       cache_disabled(info.isCacheDisabled),
       form(info.form),
       source_location(info.sourceLocation) {}
 
 }  // namespace content