media: Verify CDM Host files

content/common/BUILD.gn

Index: content/common/BUILD.gn
diff --git a/content/common/BUILD.gn b/content/common/BUILD.gn
index c049b39ec628b074921e975004491daa08556348..950927b1a3a8e77f1461ae191649cb0cdb3db161 100644
--- a/content/common/BUILD.gn
+++ b/content/common/BUILD.gn
@@ -201,6 +201,10 @@ source_set("common") {
     "manifest_manager_messages.h",
     "media/aec_dump_messages.h",
     "media/audio_messages.h",
+    "media/cdm_host_file.cc",
+    "media/cdm_host_file.h",
+    "media/cdm_host_files.cc",
+    "media/cdm_host_files.h",
     "media/cdm_info.cc",
     "media/media_devices.cc",
     "media/media_devices.h",
@@ -379,6 +383,7 @@ source_set("common") {
     "//ipc",
     "//ipc:mojom",
     "//media",
+    "//media:cdm_paths",
     "//media:shared_memory_support",
     "//media/base/ipc",
     "//media/capture",
@@ -406,6 +411,9 @@ source_set("common") {
     "//third_party/icu",
     "//third_party/libjingle",
     "//third_party/webrtc/base:rtc_base",
+
+    # TODO(xhwang): Content should not know about widevine..
+    "//third_party/widevine/cdm:headers",
     "//ui/accessibility",
     "//ui/base",
     "//ui/base/ime",