Add ExecuteJavaScriptForTest and make all tests use it

content/public/android/javatests/src/org/chromium/content/browser/JavaBridgeChildFrameTest.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.content.browser;
 
 import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.test.util.CommandLineFlags;
@@ skipping 239 matching lines @@
             @Override
             public void handleJavaScriptResult(String jsonResult) {
                 result[0] = jsonResult;
                 notifyResultIsReady();
             }
         }
         final ResultCallback resultCallback = new ResultCallback();
         runTestOnUiThread(new Runnable() {
             @Override
             public void run() {
-                webContents.evaluateJavaScript(script, resultCallback);
+                webContents.evaluateJavaScriptForTests(script, resultCallback);
             }
         });
         resultCallback.waitForResult();
         return result[0];
     }
 
     /**
      * Loads data on the UI thread and blocks until onPageFinished is called.
      */
     private void loadDataSync(final NavigationController navigationController, final String data,
             final String mimeType, final boolean isBase64Encoded) throws Throwable {
         loadUrl(navigationController, mTestCallbackHelperContainer,
                 LoadUrlParams.createLoadDataParams(data, mimeType, isBase64Encoded));
     }
 }