Revert of precache: Move the java files into //components/precache/android

chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.java

Index: chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.java b/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.java
deleted file mode 100644
index 7480c638aab866cae73f9a2c8c9fb642bb0bc84e..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.java
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2015 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.chrome.browser.precache;
-
-import android.content.Context;
-
-import org.chromium.base.CalledByNative;
-import org.chromium.base.ThreadUtils;
-import org.chromium.chrome.browser.preferences.privacy.PrivacyPreferencesManager;
-
-import java.util.concurrent.Callable;
-
-/** Class that interacts with the PrecacheManager to control precache cycles. */
-public abstract class PrecacheLauncher {
-    /** Pointer to the native PrecacheLauncher object. Set to 0 when uninitialized. */
-    private long mNativePrecacheLauncher;
-
-    /** Destroy the native PrecacheLauncher, releasing the memory that it was using. */
-    public void destroy() {
-        if (mNativePrecacheLauncher != 0) {
-            nativeDestroy(mNativePrecacheLauncher);
-            mNativePrecacheLauncher = 0;
-        }
-    }
-
-    /** Starts a precache cycle. */
-    public void start() {
-        // Lazily initialize the native PrecacheLauncher.
-        if (mNativePrecacheLauncher == 0) {
-            mNativePrecacheLauncher = nativeInit();
-        }
-        nativeStart(mNativePrecacheLauncher);
-    }
-
-    /** Cancel the precache cycle if one is ongoing. */
-    public void cancel() {
-        // Lazily initialize the native PrecacheLauncher.
-        if (mNativePrecacheLauncher == 0) {
-            mNativePrecacheLauncher = nativeInit();
-        }
-        nativeCancel(mNativePrecacheLauncher);
-    }
-
-    /** Called when a precache cycle completes. */
-    protected abstract void onPrecacheCompleted();
-
-    /**
-     * Called by native code when the precache cycle completes. This method exists because an
-     * abstract method cannot be directly called from native.
-     */
-    @CalledByNative
-    private void onPrecacheCompletedCallback() {
-        onPrecacheCompleted();
-    }
-
-    /**
-     * Returns true if precaching is enabled by either Finch or the command line flag, and also by
-     * the predictive network actions preference and current network connection type.
-     *
-     * @param privacyPreferencesManager Singleton that manages the prefetch bandwidth preference.
-     */
-    public static boolean isPrecachingEnabled(
-            final PrivacyPreferencesManager privacyPreferencesManager) {
-        if (!nativeIsPrecachingEnabled()) return false;
-        // privacyPreferencesManager.shouldPrerender() can only be executed on the UI thread.
-        return ThreadUtils.runOnUiThreadBlockingNoException(new Callable<Boolean>() {
-            @Override
-            public Boolean call() {
-                return privacyPreferencesManager.shouldPrerender();
-            }
-        });
-    }
-
-    /**
-     * If precaching is enabled, then allow the PrecacheService to be launched and signal Chrome
-     * when conditions are right to start precaching. If precaching is disabled, prevent the
-     * PrecacheService from ever starting.
-     *
-     * @param privacyPreferencesManager Singleton that manages the prefetch bandwidth preference.
-     * @param context The context of the PrecacheServiceLauncher.
-     */
-    public static void updatePrecachingEnabled(PrivacyPreferencesManager privacyPreferencesManager,
-            Context context) {
-        PrecacheServiceLauncher.setIsPrecachingEnabled(context,
-                isPrecachingEnabled(privacyPreferencesManager));
-    }
-
-    private native long nativeInit();
-    private native void nativeDestroy(long nativePrecacheLauncher);
-    private native void nativeStart(long nativePrecacheLauncher);
-    private native void nativeCancel(long nativePrecacheLauncher);
-    private static native boolean nativeIsPrecachingEnabled();
-}