Chrome remote control multipage tests: Add interactions.

tools/chrome_remote_control/chrome_remote_control/click_element.js

Index: tools/chrome_remote_control/chrome_remote_control/click_element.js
diff --git a/tools/chrome_remote_control/chrome_remote_control/click_element.js b/tools/chrome_remote_control/chrome_remote_control/click_element.js
new file mode 100644
index 0000000000000000000000000000000000000000..cebdc51fee610669fb2001df7e1ea05ef0151f69
--- /dev/null
+++ b/tools/chrome_remote_control/chrome_remote_control/click_element.js
@@ -0,0 +1,18 @@
+// Copyright (c) 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.

[nduca, 2012/11/07 04:13:49]

how about click_element_interaction.js? we'd of course rename scroll.js to
scroll_interaction.js to match the py file

[marja, 2012/11/07 10:52:27]

This file is removed, and I renamed the python file to
click_to_navigate_interaction.py, since it's not only about links but arbitrary
HTML elements, and it can only handle clicks that result in a navigation
(because it waits for the navigation to happen).

+
+// Inject this script on any page to click elements specified by a selector.
+
+(function() {
+  function clickElement(interaction) {

[nduca, 2012/11/07 04:13:49]

I'm kind of skeptical why youre even injecting javascript code here at all. This
is very simple, if you do this straight in python: 

def PerformInteraction(self, page, tab):
  assert page['selector']
 
tab.runtime.ExecuteJavascript("document.querySelector(page['selector']).click());

Done. No code injection required. No javascript required.

[marja, 2012/11/07 10:52:27]

Ok, this makes sense since the abstraction "all interactions are just loading a
js file and calling a function on it" is gone, and I also removed the
JavaScriptRunnerInteraction (it's not needed atm).

+    var element = document.querySelector(interaction['selector']);
+    if (element) {
+      element.click();
+      return true;
+    }
+    return false;
+  }
+
+  window.__clickElement = clickElement;
+})();