MediaResourceMonitor: move code from libbinder

libbinder has some code in it that only this library uses. We shouldn't
pay the cost for this code in all users of libbinder.

Bug: 183654927
Test: boot
Change-Id: I3bff3e0a1175ca5ceb32794727c18cb82252c396
diff --git a/services/mediaresourcemanager/Android.bp b/services/mediaresourcemanager/Android.bp
index e503885..e67720c 100644
--- a/services/mediaresourcemanager/Android.bp
+++ b/services/mediaresourcemanager/Android.bp
@@ -13,6 +13,9 @@
     srcs: [
         "ResourceManagerService.cpp",
         "ServiceLog.cpp",
+
+        // TODO: convert to AIDL?
+        "IMediaResourceMonitor.cpp",
     ],
 
     shared_libs: [