Componentize EncryptedMediaMessageFilter and rename it CdmMessageFilter.

components/cdm/browser/encrypted_media_message_filter_android.cc

Index: components/cdm/browser/encrypted_media_message_filter_android.cc
diff --git a/chrome/browser/media/encrypted_media_message_filter_android.cc b/components/cdm/browser/encrypted_media_message_filter_android.cc
similarity index 95%
rename from chrome/browser/media/encrypted_media_message_filter_android.cc
rename to components/cdm/browser/encrypted_media_message_filter_android.cc
index e16b0e9b948cc3da2691d52ae38e9a4b3e79ed56..0c0b2327c88f2f00e080a88475c1af751fc445e1 100644
--- a/chrome/browser/media/encrypted_media_message_filter_android.cc
+++ b/components/cdm/browser/encrypted_media_message_filter_android.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/media/encrypted_media_message_filter_android.h"
+#include "components/cdm/browser/encrypted_media_message_filter_android.h"
 
 #include <string>
 
-#include "chrome/common/encrypted_media_messages_android.h"
+#include "components/cdm/common/encrypted_media_messages_android.h"
 #include "ipc/ipc_message_macros.h"
 #include "media/base/android/media_codec_bridge.h"
 #include "media/base/android/media_drm_bridge.h"
@@ -16,7 +16,7 @@ using content::SupportedCodecs;
 using media::MediaCodecBridge;
 using media::MediaDrmBridge;
 
-namespace chrome {
+namespace cdm {
 
 const size_t kMaxKeySystemLength = 256;
 
@@ -112,4 +112,4 @@ void EncryptedMediaMessageFilterAndroid::OnGetSupportedKeySystems(
   response->non_compositing_codecs = GetSupportedCodecs(request, false);
 }
 
-}  // namespace chrome
+}  // namespace cdm