WebVR: lock focus while presenting to presenting window

chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/VrTestBase.java

 // Copyright 2017 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.chrome.browser.vr_shell;
 
 import static org.chromium.chrome.browser.vr_shell.VrUtils.POLL_CHECK_INTERVAL_LONG_MS;
 import static org.chromium.chrome.browser.vr_shell.VrUtils.POLL_CHECK_INTERVAL_SHORT_MS;
 import static org.chromium.chrome.browser.vr_shell.VrUtils.POLL_TIMEOUT_LONG_MS;
 import static org.chromium.chrome.browser.vr_shell.VrUtils.POLL_TIMEOUT_SHORT_MS;
@@ skipping 175 matching lines @@
         }
         return true;
     }
 
     /**
      * Waits for a JavaScript step to finish, asserting that the step finished
      * instead of timing out.
      * @param webContents The WebContents for the tab the JavaScript step is in
      */
     protected void waitOnJavaScriptStep(WebContents webContents) {
-        assertTrue("Polling JavaScript boolean javascriptDone succeeded",
+        assertTrue("Polling JavaScript boolean javascriptDone timed out",
                 pollJavaScriptBoolean("javascriptDone", POLL_TIMEOUT_LONG_MS, webContents));
         // Reset the synchronization boolean
         runJavaScriptOrFail("javascriptDone = false", POLL_TIMEOUT_SHORT_MS, webContents);
     }
 
     /**
      * Executes a JavaScript step function using the given WebContents.
      * @param stepFunction The JavaScript step function to call
      * @param webContents The WebContents for the tab the JavaScript is in
      */
     protected void executeStepAndWait(String stepFunction, WebContents webContents) {
         // Run the step and block
         JavaScriptUtils.executeJavaScript(webContents, stepFunction);
         waitOnJavaScriptStep(webContents);
     }
 }