Shrink the music icon.

The icons on the ManageApplications screen are 42dp by default. By
pushing a big inset, we can shrink it to be appropriate.

Change-Id: Iadf9f9f708c7469f42559f88626789127f865543
Fixes: 62548746
Test: Manual

src/com/android/settings/applications/MusicViewHolderController.java

@@ -19,6 +19,7 @@ package com.android.settings.applications;
 import android.app.Fragment;
 import android.content.Context;
 import android.content.Intent;
+import android.graphics.drawable.InsetDrawable;
 import android.os.UserHandle;
 import android.provider.DocumentsContract;
 import android.support.annotation.WorkerThread;
@@ -38,6 +39,7 @@ public class MusicViewHolderController implements FileViewHolderController {
     private static final String TAG = "MusicViewHolderController";
 
     private static final String AUTHORITY_MEDIA = "com.android.providers.media.documents";
+    private static final int INSET_SIZE = 24; // dp
 
     private Context mContext;
     private StorageStatsSource mSource;
@@ -71,7 +73,8 @@ public class MusicViewHolderController implements FileViewHolderController {
 
     @Override
     public void setupView(AppViewHolder holder) {
-        holder.appIcon.setImageDrawable(mContext.getDrawable(R.drawable.ic_headset_24dp));
+        holder.appIcon.setImageDrawable(
+                new InsetDrawable(mContext.getDrawable(R.drawable.ic_headset_24dp), INSET_SIZE));
         holder.appName.setText(mContext.getText(R.string.audio_files_title));
         holder.summary.setText(Formatter.formatFileSize(mContext, mMusicSize));
     }