media: Fix gn deps on media/ targets.

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/ppapi_cdm_adapter.gni")
 import("//third_party/widevine/cdm/widevine.gni")
 
@@ skipping 110 matching lines @@
     ]
     output = "$target_gen_dir/widevinecdmadapter_version.rc"
   }
 
   ppapi_cdm_adapter("widevinecdmadapter") {
     defines = []
     deps = [
       ":version_h",
       ":widevinecdm",
       ":widevinecdmadapter_resources",
-      "//ppapi/cpp",
     ]
 
     if (is_linux) {
       ldflags =
           [ rebase_path("$root_out_dir/libwidevinecdm.so", root_build_dir) ]
     } else if (is_win) {
       ldflags =
           [ rebase_path("$root_out_dir/widevinecdm.dll.lib", root_build_dir) ]
     } else if (is_mac) {
       ldflags =
@@ skipping 10 matching lines @@
 # 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 data_deps on this target:
       #"//third_party/widevine/test/license_server/license_server.gyp:test_license_server"
     ]
   }
 }