Replace instances of datadeps --> data_deps.

third_party/widevine/cdm/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/features.gni")
 import("//chrome/version.gni")  # TODO layering violation
 import("//media/cdm/ppapi/cdm_adapter.gni")
 import("//third_party/widevine/cdm/widevine.gni")
 
@@ skipping 136 matching lines @@
   group("widevinecdmadapter") {
   }
 }
 
 # This target exists for tests to depend on that pulls in a runtime dependency
 # on the license server.
 source_set("widevine_test_license_server") {
   if (is_chrome_branded && is_linux) {
     deps = [
       # TODO(jrummell)
-      # This target should be removed and targets should have datadeps on this target:
+      # This target should be removed and targets should have data_deps on this target:
       #"//third_party/widevine/test/license_server/license_server.gyp:test_license_server"
     ]
   }
 }