Create plugin interface for volume dialog

Very few logic changes, mostly just breaking out certain interfaces
and classes to the plugin lib.

Test: make + volume keys
Change-Id: Ieabc6d35f6ef980842849236a0b8ffd5543b3a2c
diff --git a/packages/SystemUI/src/com/android/systemui/Dependency.java b/packages/SystemUI/src/com/android/systemui/Dependency.java
index 374086d..d058e78 100644
--- a/packages/SystemUI/src/com/android/systemui/Dependency.java
+++ b/packages/SystemUI/src/com/android/systemui/Dependency.java
@@ -32,6 +32,7 @@
 import com.android.systemui.plugins.PluginDependencyProvider;
 import com.android.systemui.plugins.PluginManager;
 import com.android.systemui.plugins.PluginManagerImpl;
+import com.android.systemui.plugins.VolumeDialogController;
 import com.android.systemui.statusbar.phone.ConfigurationControllerImpl;
 import com.android.systemui.statusbar.phone.DarkIconDispatcherImpl;
 import com.android.systemui.statusbar.phone.ManagedProfileController;
@@ -79,6 +80,7 @@
 import com.android.systemui.util.leak.GarbageMonitor;
 import com.android.systemui.util.leak.LeakDetector;
 import com.android.systemui.util.leak.LeakReporter;
+import com.android.systemui.volume.VolumeDialogControllerImpl;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -252,6 +254,9 @@
         mProviders.put(LocalBluetoothManager.class, () ->
                 LocalBluetoothManager.getInstance(mContext, null));
 
+        mProviders.put(VolumeDialogController.class, () ->
+                new VolumeDialogControllerImpl(mContext));
+
         // Put all dependencies above here so the factory can override them if it wants.
         SystemUIFactory.getInstance().injectDependencies(mProviders, mContext);
     }