BrowserPluginHostTest: Rewrite 3 focus related tests and 1 visibility test to browser_tests.

chrome/test/data/extensions/platform_apps/web_view/focus/inject_advance_focus_test.js

Index: chrome/test/data/extensions/platform_apps/web_view/focus/inject_advance_focus_test.js
diff --git a/chrome/test/data/extensions/platform_apps/web_view/focus/inject_advance_focus_test.js b/chrome/test/data/extensions/platform_apps/web_view/focus/inject_advance_focus_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..ab167fdc0b55f5db4ef748dd15b27b4c8483f48f
--- /dev/null
+++ b/chrome/test/data/extensions/platform_apps/web_view/focus/inject_advance_focus_test.js
@@ -0,0 +1,45 @@
+// Copyright 2014 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.
+
+var embedder = null;
+var button1FocusCount = 0;
+
+var LOG = function(msg) {
+  window.console.log(msg);
+};
+
+var sendMessage = function(msgArray) {
+  if (embedder) {
+    embedder.postMessage(JSON.stringify(msgArray), '*');
+  }
+};
+
+var init = function() {
+  var button1 = document.createElement('button');
+  button1.addEventListener('focus', function(e) {
+    LOG('button1.focus');
+    ++button1FocusCount;
+    sendMessage(['button1-focused', button1FocusCount]);
+  });
+  button1.innerText = 'Before';
+  button1.setAttribute('tabIndex', 0);
+
+  var button2 = document.createElement('button');
+  button2.innerText = 'Before';
+  button2.setAttribute('tabIndex', 0);
+
+  document.body.appendChild(button1);
+  document.body.appendChild(button2);
+
+  window.addEventListener('message', function(e) {
+    var data = JSON.parse(e.data);
+    embedder = e.source;
+    LOG('message, data: ' + data);
+    if (data[0] == 'connect') {
+      sendMessage(['connected']);
+    }
+  });
+};
+
+init();