Added test case for CopyImageUrl and CopyEmailAddress.

chrome/test/data/android/contextmenu/context_menu_test.html

Index: chrome/test/data/android/contextmenu/context_menu_test.html
diff --git a/chrome/test/data/android/contextmenu/context_menu_test.html b/chrome/test/data/android/contextmenu/context_menu_test.html
index e98fda605c8831c90e22dd2991de0e9128534eef..7280435c8cb691cb9e5aaa6ecc31fd2304891890 100644
--- a/chrome/test/data/android/contextmenu/context_menu_test.html
+++ b/chrome/test/data/android/contextmenu/context_menu_test.html
@@ -12,6 +12,8 @@
 <a href="test_link.html" id="testImageLink"><img src="test_image.png"/></a>
 <br />
 <a href="test_link.html">
+<br />
+<a href="mailto:someone@example.com" id="testEmail">EmailTest</a>

[Bernhard Bauer, 2014/09/30 08:51:08]

This is in the wrong place. The <a> opened in line 14 needs to be closed first
(the corresponding closing tag is right now in line 26), then we can open a new
one.

[ankit, 2014/09/30 09:20:46]

Done.

   <script type="text/javascript">
   function myFunction()
   {