[media] Make cdm_manager.h a conditional include.

media/gpu/android_video_decode_accelerator.cc

Index: media/gpu/android_video_decode_accelerator.cc
diff --git a/media/gpu/android_video_decode_accelerator.cc b/media/gpu/android_video_decode_accelerator.cc
index 90e1abdfdcd03e368b5d715c2d7cd61d083223ea..8c3e66f30a0f42ce5b1492b67b6a649d5f738c9a 100644
--- a/media/gpu/android_video_decode_accelerator.cc
+++ b/media/gpu/android_video_decode_accelerator.cc
@@ -34,7 +34,6 @@
 #include "media/base/media.h"
 #include "media/base/timestamp_constants.h"
 #include "media/base/video_decoder_config.h"
-#include "media/cdm/cdm_manager.h"
 #include "media/gpu/android_video_surface_chooser_impl.h"
 #include "media/gpu/avda_picture_buffer_manager.h"
 #include "media/gpu/content_video_view_overlay.h"
@@ -44,6 +43,10 @@
 #include "ui/gl/android/surface_texture.h"
 #include "ui/gl/gl_bindings.h"
 
+#if defined(ENABLE_MOJO_MEDIA_IN_GPU_PROCESS)
+#include "media/cdm/cdm_manager.h"  // nogncheck
+#endif
+
 #define NOTIFY_ERROR(error_code, error_message)      \
   do {                                               \
     DLOG(ERROR) << error_message;                    \