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

third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp

 // Copyright 2016 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 "base/message_loop/message_loop.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebViewScheduler.h"
 #include "public/web/WebLocalFrame.h"
 #include "public/web/WebScriptExecutionCallback.h"
 #include "public/web/WebScriptSource.h"
 #include "public/web/WebView.h"
 #include "web/tests/sim/SimRequest.h"
 #include "web/tests/sim/SimTest.h"
 
 namespace blink {
 
 namespace {
 class ScriptExecutionCallbackHelper : public WebScriptExecutionCallback {
  public:
   const String result() const { return m_result; }
 
  private:
   void completed(const WebVector<v8::Local<v8::Value>>& values) override {
-    if (!values.isEmpty() && !values[0].IsEmpty() && values[0]->IsString()) {
+    if (!values.empty() && !values[0].IsEmpty() && values[0]->IsString()) {
       m_result = toCoreString(v8::Local<v8::String>::Cast(values[0]));
     }
   }
 
   String m_result;
 };
 }  // namespace
 
 class VirtualTimeTest : public SimTest {
  protected:
@@ skipping 191 matching lines @@
   // ALso schedule a second timer for the same point in time.
   ExecuteJavaScript("setTimeout(() => { run_order.push(2); }, 1000);");
 
   // The second DOM timer shouldn't have run because pausing virtual time also
   // atomically pauses DOM timers.
   testing::runPendingTasks();
   EXPECT_EQ("1", ExecuteJavaScript("run_order.join(', ')"));
 }
 
 }  // namespace blink