Define AppBatteryStatsProto for AppBatteryTracker dumpsys

Bug: 224604491
Test: build
Change-Id: I15e0915e3a80220cd4c7d328d0b2a7c581043640

core/proto/android/os/appbatterystats.proto

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+package android.os;
+
+option java_multiple_files = true;
+
+message AppBatteryStatsProto {
+  message UidStats {
+    optional int32 uid = 1;
+
+    message ProcessStateStats {
+      enum ProcessState {
+        UNSPECIFIED = 0;
+        FOREGROUND = 1;
+        BACKGROUND = 2;
+        FOREGROUND_SERVICE = 3;
+        CACHED = 4;
+      }
+
+      optional ProcessState process_state = 1;
+
+      // Time spent in this state in the past 24 hours
+      optional int64 duration_ms = 2;
+      // Estimated power consumed in this state in the past 24 hours
+      optional double power_mah = 3;
+    }
+
+    repeated ProcessStateStats process_state_stats = 2;
+  }
+
+  repeated UidStats uid_stats = 1;
+}