Split apart the PPAPI GN targets

media/cdm/ppapi/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/features.gni")
 
 # Android doesn't use ffmpeg.
 use_ffmpeg = !is_android
 
 # The GYP version supports build flags "use_fake_video_decoder" and
@@ skipping 39 matching lines @@
 }
 
 # TODO(GYP): clearkeycdmadapter_resources
 
 group("clearkeycdmadapter") {
   deps = [
     #":cdmadapter",  TODO(GYP)
     ":clearkeycdm",
 
     #":clearkeycdmadapter_resources",  TODO(GYP)
-    "//ppapi:ppapi_cpp",
+    "//ppapi/cpp",
   ]
 }