remove proxy binder service IIncrementalManager

This is no longer needed because native Incremental Service directly
uses IDataLoaderManager.

BUG: 150406132
Test: atest service.incremental_test
Test: atest PackageManagerShellCommandIncrementalTest
Change-Id: Idbde2988883becbf3eb707d42c0558774a6073e8

services/java/com/android/server/SystemServer.java

@@ -105,7 +105,6 @@ import com.android.server.emergency.EmergencyAffordanceService;
 import com.android.server.gpu.GpuService;
 import com.android.server.hdmi.HdmiControlService;
 import com.android.server.incident.IncidentCompanionService;
-import com.android.server.incremental.IncrementalManagerService;
 import com.android.server.input.InputManagerService;
 import com.android.server.inputmethod.InputMethodManagerService;
 import com.android.server.inputmethod.InputMethodSystemProperty;
@@ -335,7 +334,7 @@ public final class SystemServer {
     private ContentResolver mContentResolver;
     private EntropyMixer mEntropyMixer;
     private DataLoaderManagerService mDataLoaderManagerService;
-    private IncrementalManagerService mIncrementalManagerService;
+    private long mIncrementalServiceHandle = 0;
 
     private boolean mOnlyCore;
     private boolean mFirstBoot;
@@ -377,6 +376,16 @@ public final class SystemServer {
      */
     private static native void spawnFdLeakCheckThread();
 
+    /**
+     * Start native Incremental Service and get its handle.
+     */
+    private static native long startIncrementalService();
+
+    /**
+     * Inform Incremental Service that system is ready.
+     */
+    private static native void setIncrementalServiceSystemReady(long incrementalServiceHandle);
+
     /**
      * The main entry point from zygote.
      */
@@ -745,8 +754,8 @@ public final class SystemServer {
         t.traceEnd();
 
         // Incremental service needs to be started before package manager
-        t.traceBegin("StartIncrementalManagerService");
-        mIncrementalManagerService = IncrementalManagerService.start(mSystemContext);
+        t.traceBegin("StartIncrementalService");
+        mIncrementalServiceHandle = startIncrementalService();
         t.traceEnd();
 
         // Power manager needs to be started early because other services need it.
@@ -2133,9 +2142,9 @@ public final class SystemServer {
         mPackageManagerService.systemReady();
         t.traceEnd();
 
-        if (mIncrementalManagerService != null) {
-            t.traceBegin("MakeIncrementalManagerServiceReady");
-            mIncrementalManagerService.systemReady();
+        if (mIncrementalServiceHandle != 0) {
+            t.traceBegin("MakeIncrementalServiceReady");
+            setIncrementalServiceSystemReady(mIncrementalServiceHandle);
             t.traceEnd();
         }