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

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

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java
index 4e3165e05e532d7cf850f1e1fbfe08de952681b2..92ade8578f51aad1e9f9b79497aec56f1f3602bc 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java
@@ -571,6 +571,17 @@ public class AwTestBase
                 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.