[Android Webview] Refactor LoadUrlTest and work on embedded_test_server custom handler

android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java

 // Copyright 2012 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.
 
 package org.chromium.android_webview.test;
 
 import static org.chromium.base.test.util.ScalableTimeout.scaleTimeout;
 
 import android.app.Instrumentation;
 import android.content.Context;
@@ skipping 554 matching lines @@
      * result of its execution in JSON format.
      */
     public String executeJavaScriptAndWaitForResult(final AwContents awContents,
             TestAwContentsClient viewClient, final String code) throws Exception {
         return JSUtils.executeJavaScriptAndWaitForResult(this, awContents,
                 viewClient.getOnEvaluateJavaScriptResultHelper(),
                 code);
     }
 
     /**
+     * Executes JavaScript code within the given ContentView to get the text content in
+     * document body. Returns the result string without double quotes.
+     */
+    protected String getJavaScriptResultBodyTextContent(
+            final AwContents awContents, final TestAwContentsClient viewClient) throws Exception {
+        String raw = executeJavaScriptAndWaitForResult(
+                awContents, viewClient, "document.body.textContent");
+        return maybeStripDoubleQuotes(raw);
+    }
+
+    /**
      * Wrapper around CriteriaHelper.pollInstrumentationThread. This uses AwTestBase-specifc
      * timeouts and treats timeouts and exceptions as test failures automatically.
      */
     public static void pollInstrumentationThread(final Callable<Boolean> callable)
             throws Exception {
         CriteriaHelper.pollInstrumentationThread(new Criteria() {
             @Override
             public boolean isSatisfied() {
                 try {
                     return callable.call();
@@ skipping 164 matching lines @@
         int titleCallCount = onReceivedTitleHelper.getCallCount();
 
         onPageFinishedHelper.waitForCallback(finishCallCount, 1, WAIT_TIMEOUT_MS,
                 TimeUnit.MILLISECONDS);
         onReceivedTitleHelper.waitForCallback(titleCallCount, 1, WAIT_TIMEOUT_MS,
                 TimeUnit.MILLISECONDS);
 
         return new PopupInfo(popupContentsClient, popupContainerView, popupContents);
     }
 }