In chromedriver, check if an element is clickable before clicking.

DEPS

 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "webkit_trunk": "http://svn.webkit.org/repository/webkit/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
   "webkit_revision": "91912",
   "chromium_git": "http://git.chromium.org/git",
   "swig_revision": "69281",
   # These hashes need to be updated when nacl_revision is changed.
@@ skipping 200 matching lines @@
     Var("webkit_trunk") + "/LayoutTests/http/tests/filesystem@" +
     Var("webkit_revision"),
 
   "src/third_party/swig/Lib":
     "/trunk/deps/third_party/swig/Lib@" + Var("swig_revision"),
 
   # WebDriver keeps client and test code separate, and merges when the
   # python egg is installed. We run tests directly from src, so import
   # the code into the structure expected by the tests.
   "src/third_party/webdriver/python/selenium":
-    "http://selenium.googlecode.com/svn/trunk/py/selenium@12107",
+    "http://selenium.googlecode.com/svn/trunk/py/selenium@13091",
   "src/third_party/webdriver/python/selenium/test":
-    "http://selenium.googlecode.com/svn/trunk/py/test@12107",
+    "http://selenium.googlecode.com/svn/trunk/py/test@13091",
 
   "src/third_party/libvpx":
     "/trunk/deps/third_party/libvpx@" +
     Var("libvpx_revision"),
 
   "src/third_party/ffmpeg":
     "/trunk/deps/third_party/ffmpeg/source@" +
     Var("ffmpeg_revision"),
 
   "src/third_party/libjingle/source":
@@ skipping 161 matching lines @@
   {
     # This downloads binaries for Native Client's integrated runtime (IRT)
     # library, which is built as NaCl untrusted code.
     "pattern": ".",
     "action": ["python", "src/build/download_nacl_irt.py",
                "--nacl_revision", Var("nacl_revision"),
                "--file_hash", "x86_32", Var("nacl_irt_hash_x86_32"),
                "--file_hash", "x86_64", Var("nacl_irt_hash_x86_64")],
   },
 ]