Replace Chrome IPC with Mojo IPC for querying BatteryStatus service

content/public/android/java/src/org/chromium/content/browser/BatteryStatusManager.java

Index: content/public/android/java/src/org/chromium/content/browser/BatteryStatusManager.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/BatteryStatusManager.java b/content/public/android/java/src/org/chromium/content/browser/BatteryStatusManager.java
deleted file mode 100644
index c6f913683dd7b7c091a8c0a3e64ff3f2dbadac0f..0000000000000000000000000000000000000000
--- a/content/public/android/java/src/org/chromium/content/browser/BatteryStatusManager.java
+++ /dev/null
@@ -1,148 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.content.browser;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.os.BatteryManager;
-import android.os.Build;
-import android.util.Log;
-
-import org.chromium.base.CalledByNative;
-import org.chromium.base.JNINamespace;
-import org.chromium.base.VisibleForTesting;
-
-/**
- * Android implementation of the battery status APIs.
- */
-@JNINamespace("content")
-class BatteryStatusManager {
-
-    private static final String TAG = "BatteryStatusManager";
-
-    // A reference to the application context in order to acquire the SensorService.
-    private final Context mAppContext;
-    private final IntentFilter mFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
-    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            BatteryStatusManager.this.onReceive(intent);
-        }
-    };
-
-    // Non-zero if and only if we're listening for events.
-    // To avoid race conditions on the C++ side, access must be synchronized.
-    private long mNativePtr;
-    // The lock to access the mNativePtr.
-    private final Object mNativePtrLock = new Object();
-
-    private boolean mEnabled = false;
-
-    protected BatteryStatusManager(Context context) {
-        mAppContext = context.getApplicationContext();
-    }
-
-    @CalledByNative
-    static BatteryStatusManager getInstance(Context appContext) {
-        return new BatteryStatusManager(appContext);
-    }
-
-    /**
-     * Start listening for intents
-     * @return True on success.
-     */
-    @CalledByNative
-    boolean start(long nativePtr) {
-        synchronized (mNativePtrLock) {
-            if (!mEnabled && mAppContext.registerReceiver(mReceiver, mFilter) != null) {
-                // success
-                mNativePtr = nativePtr;
-                mEnabled = true;
-            }
-        }
-        return mEnabled;
-    }
-
-    /**
-     * Stop listening to intents.
-     */
-    @CalledByNative
-    void stop() {
-        synchronized (mNativePtrLock) {
-            if (mEnabled) {
-                mAppContext.unregisterReceiver(mReceiver);
-                mNativePtr = 0;
-                mEnabled = false;
-            }
-        }
-    }
-
-    @VisibleForTesting
-    void onReceive(Intent intent) {
-       if (!intent.getAction().equals(Intent.ACTION_BATTERY_CHANGED)) {
-           Log.e(TAG, "Unexpected intent.");
-           return;
-       }
-
-       boolean present = ignoreBatteryPresentState() ?
-               true : intent.getBooleanExtra(BatteryManager.EXTRA_PRESENT, false);
-       int pluggedStatus = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
-
-       if (!present || pluggedStatus == -1) {
-           // No battery or no plugged status: return default values.
-           gotBatteryStatus(true, 0, Double.POSITIVE_INFINITY, 1);
-           return;
-       }
-
-       boolean charging = pluggedStatus != 0;
-       int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
-       boolean batteryFull = status == BatteryManager.BATTERY_STATUS_FULL;
-
-       int current = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
-       int max = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
-       double level = (double)current / (double)max;
-       if (level < 0 || level > 1) {
-           // Sanity check, assume default value in this case.
-           level = 1.0;
-       }
-
-       // Currently Android does not provide charging/discharging time, as a work-around
-       // we could compute it manually based on level delta.
-       // TODO(timvolodine): add proper projection for chargingTime, dischargingTime
-       // (see crbug.com/401553).
-       double chargingTime = (charging & batteryFull) ? 0 : Double.POSITIVE_INFINITY;
-       double dischargingTime = Double.POSITIVE_INFINITY;
-
-       gotBatteryStatus(charging, chargingTime, dischargingTime, level);
-    }
-
-    /**
-     * Returns whether the BatteryStatusManager should ignore the battery present state.
-     * It is required for some devices that incorrectly set the EXTRA_PRESENT property.
-     */
-    protected boolean ignoreBatteryPresentState() {
-        // BatteryManager.EXTRA_PRESENT appears to be unreliable on Galaxy Nexus,
-        // Android 4.2.1, it always reports false. See crbug.com/384348.
-        return Build.MODEL.equals("Galaxy Nexus");
-    }
-
-    protected void gotBatteryStatus(boolean charging, double chargingTime,
-            double dischargingTime, double level) {
-        synchronized (mNativePtrLock) {
-            if (mNativePtr != 0) {
-                nativeGotBatteryStatus(mNativePtr, charging, chargingTime, dischargingTime, level);
-            }
-        }
-    }
-
-    /**
-     * Native JNI call
-     * see content/browser/battery_status/battery_status_manager.cc
-     */
-    private native void nativeGotBatteryStatus(long nativeBatteryStatusManagerAndroid,
-            boolean charging, double chargingTime, double dischargingTime, double level);
-}