Remove DRP manager code

Remove DRP manager code from M39. We will reintroduce the code to
proper branch once the test setup is ready.

Bug: 17998706

Change-Id: I83f2aabd9bf94eae1ee774a831e1a131717e24e0
diff --git a/chromium/java/com/android/webview/chromium/DataReductionProxyManager.java b/chromium/java/com/android/webview/chromium/DataReductionProxyManager.java
deleted file mode 100644
index 7fe449c..0000000
--- a/chromium/java/com/android/webview/chromium/DataReductionProxyManager.java
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-package com.android.webview.chromium;
-
-import android.content.BroadcastReceiver;
-import android.content.ContentResolver;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.database.ContentObserver;
-import android.database.Cursor;
-import android.database.SQLException;
-import android.net.Uri;
-import android.os.AsyncTask;
-import android.os.Handler;
-import android.provider.Settings;
-import android.util.Log;
-import android.webkit.WebView;
-
-import org.chromium.android_webview.AwContentsStatics;
-
-import java.lang.reflect.Field;
-
-/**
- * Controls data reduction proxy. This logic will be moved to upstream fully.
- */
-public final class DataReductionProxyManager {
-
-    // The setting Uri. Used when querying GoogleSettings.
-    private static final Uri CONTENT_URI = Uri.parse("content://com.google.settings/partner");
-
-    // Setting name for allowing data reduction proxy. Used when querying GoogleSettings.
-    // Setting type: int ( 0 = disallow, 1 = allow )
-    private static final String WEBVIEW_DATA_REDUCTION_PROXY = "use_webview_data_reduction_proxy";
-
-    private static final String DRP_CLASS = "com.android.webview.chromium.Drp";
-    private static final String TAG = "DataReductionProxySettingListener";
-
-    /*
-     * Listen for DataReductionProxySetting changes and take action.
-     * TODO: This is the old mechanism. Will be obsolete after L release.
-     * remove before release.
-     */
-    private static final class ProxySettingListener extends BroadcastReceiver {
-
-        final String mKey;
-
-        ProxySettingListener(final String key) {
-            mKey = key;
-        }
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            applyDataReductionProxySettingsAsync(context, mKey);
-        }
-    }
-
-    private ProxySettingListener mProxySettingListener;
-
-    private ContentObserver mProxySettingObserver;
-
-    public DataReductionProxyManager() { }
-
-    public void start(final Context context) {
-        final String key = readKey();
-        if (key == null || key.isEmpty()) {
-            return;
-        }
-        applyDataReductionProxySettingsAsync(context, key);
-        IntentFilter filter = new IntentFilter();
-        filter.addAction(WebView.DATA_REDUCTION_PROXY_SETTING_CHANGED);
-        mProxySettingListener = new ProxySettingListener(key);
-        context.registerReceiver(mProxySettingListener, filter);
-        ContentResolver resolver = context.getContentResolver();
-        mProxySettingObserver = new ContentObserver(new Handler()) {
-            @Override
-            public void onChange(boolean selfChange, Uri uri) {
-                applyDataReductionProxySettingsAsync(context, key);
-            }
-        };
-        resolver.registerContentObserver(
-                    Uri.withAppendedPath(CONTENT_URI, WEBVIEW_DATA_REDUCTION_PROXY),
-                    false, mProxySettingObserver);
-    }
-
-    private String readKey() {
-        try {
-            Class<?> cls = Class.forName(DRP_CLASS);
-            Field f = cls.getField("KEY");
-            return (String) f.get(null);
-        } catch (ClassNotFoundException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        } catch (NoSuchFieldException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        } catch (SecurityException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        } catch (IllegalArgumentException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        } catch (IllegalAccessException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        } catch (NullPointerException ex) {
-            Log.e(TAG, "No DRP key due to exception:" + ex);
-        }
-        return null;
-    }
-
-    private static void applyDataReductionProxySettingsAsync(final Context context,
-            final String key) {
-        AsyncTask<Void, Void, Boolean> task = new AsyncTask<Void, Void, Boolean>() {
-            @Override
-            protected Boolean doInBackground(Void... params) {
-                return isDataReductionProxyEnabled(context);
-            }
-            @Override
-            protected void onPostExecute(Boolean enabled) {
-                if (enabled) {
-                    // Set the data reduction proxy key.
-                    AwContentsStatics.setDataReductionProxyKey(key);
-                }
-                AwContentsStatics.setDataReductionProxyEnabled(enabled);
-            }
-        };
-        task.execute();
-    }
-
-    private static boolean isDataReductionProxyEnabled(Context context) {
-        boolean enabled = getProxySetting(context.getContentResolver(),
-                    WEBVIEW_DATA_REDUCTION_PROXY) != 0;
-        // intentional fallback. remove before L release.
-        if (!enabled) {
-            enabled = Settings.Secure.getInt(context.getContentResolver(),
-                        Settings.Secure.WEBVIEW_DATA_REDUCTION_PROXY, 0) != 0;
-        }
-        return enabled;
-    }
-
-    // Read query setting from GoogleSettings.
-    private static int getProxySetting(ContentResolver resolver, String name) {
-        String value = null;
-        Cursor c = null;
-        try {
-            c = resolver.query(CONTENT_URI, new String[] { "value" },
-                    "name=?", new String[]{ name }, null);
-            if (c != null && c.moveToNext()) value = c.getString(0);
-        } catch (SQLException e) {
-            // SQL error: return null, but don't cache it.
-            Log.e(TAG, "Can't get key " + name + " from " + CONTENT_URI, e);
-        } finally {
-            if (c != null) c.close();
-        }
-        int enabled = 0;
-        try {
-            if (value != null) {
-                enabled = Integer.parseInt(value);
-            }
-        } catch (NumberFormatException e) {
-            Log.e(TAG, "cannot parse" + value, e);
-        }
-        return enabled;
-    }
-}
diff --git a/chromium/java/com/android/webview/chromium/WebViewChromiumFactoryProvider.java b/chromium/java/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
index 1b10971..31708d1 100644
--- a/chromium/java/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
+++ b/chromium/java/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
@@ -97,7 +97,6 @@
     // Read/write protected by mLock.
     private boolean mStarted;
 
-    private DataReductionProxyManager mProxyManager;
     private SharedPreferences mWebViewPrefs;
 
     public WebViewChromiumFactoryProvider() {
@@ -253,10 +252,6 @@
         }
         mWebViewsToStart.clear();
         mWebViewsToStart = null;
-
-        // Start listening for data reduction proxy setting changes.
-        mProxyManager = new DataReductionProxyManager();
-        mProxyManager.start(ActivityThread.currentApplication());
     }
 
     boolean hasStarted() {