Update src/third_party/WebKit to 71060 to update svn:ignore.

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": "75501",
   "skia_revision": "673",
   "chromium_git": "http://git.chromium.org/git",
   "swig_revision": "69281",
@@ skipping 19 matching lines @@
   "src/sdch/open-vcdiff":
     (Var("googlecode_url") % "open-vcdiff") + "/trunk@28",
 
   "src/testing/gtest":
     (Var("googlecode_url") % "googletest") + "/trunk@492",
 
   "src/third_party/angle":
     (Var("googlecode_url") % "angleproject") + "/trunk@516",
 
   "src/third_party/WebKit":
-    "/trunk/deps/third_party/WebKit@70129",
+    "/trunk/deps/third_party/WebKit@71060",
 
   "src/third_party/icu":
     "/trunk/deps/third_party/icu42@69864",
 
   "src/third_party/hunspell":
    "/trunk/deps/third_party/hunspell@65351",
 
   "src/third_party/hunspell_dictionaries":
    "/trunk/deps/third_party/hunspell_dictionaries@60756",
 
@@ skipping 257 matching lines @@
 ]
 
 
 hooks = [
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
 ]