Implement Web Restrictions in WebView.

components/web_restrictions/browser/java/src/org/chromium/components/webrestrictions/WebRestrictionsClient.java

Index: components/web_restrictions/browser/java/src/org/chromium/components/webrestrictions/WebRestrictionsClient.java
diff --git a/components/web_restrictions/browser/java/src/org/chromium/components/webrestrictions/WebRestrictionsClient.java b/components/web_restrictions/browser/java/src/org/chromium/components/webrestrictions/WebRestrictionsClient.java
deleted file mode 100644
index 23df78e01b4beec5abf2521a22e7edba459e7b97..0000000000000000000000000000000000000000
--- a/components/web_restrictions/browser/java/src/org/chromium/components/webrestrictions/WebRestrictionsClient.java
+++ /dev/null
@@ -1,154 +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.components.webrestrictions;
-
-import android.content.ContentResolver;
-import android.content.ContentValues;
-import android.database.ContentObserver;
-import android.database.Cursor;
-import android.net.Uri;
-import android.text.TextUtils;
-
-import org.chromium.base.ContextUtils;
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.JNINamespace;
-
-/**
- * This class acts as an interface that talks to the content provider which actually implements the
- * web restriction provider.
- */
-@JNINamespace("web_restrictions")
-public class WebRestrictionsClient {
-    static class ShouldProceedResult {
-        private final Cursor mCursor;
-
-        ShouldProceedResult(Cursor cursor) {
-            mCursor = cursor;
-        }
-
-        @CalledByNative("ShouldProceedResult")
-        boolean shouldProceed() {
-            if (mCursor == null) return true;
-            return mCursor.getInt(0) > 0;
-        }
-
-        @CalledByNative("ShouldProceedResult")
-        int getInt(int column) {
-            if (mCursor == null) return 0;
-            return mCursor.getInt(column);
-        }
-
-        @CalledByNative("ShouldProceedResult")
-        String getString(int column) {
-            if (mCursor == null) return null;
-            return mCursor.getString(column);
-        }
-
-        @CalledByNative("ShouldProceedResult")
-        String getColumnName(int column) {
-            if (mCursor == null) return null;
-            return mCursor.getColumnName(column);
-        }
-
-        @CalledByNative("ShouldProceedResult")
-        int getColumnCount() {
-            if (mCursor == null) return 0;
-            return mCursor.getColumnCount();
-        }
-    }
-
-    // Handle to allow mocking for C++ unit testing
-    private static WebRestrictionsClient sMock;
-
-    private Uri mQueryUri;
-    private Uri mRequestUri;
-    private ContentObserver mContentObserver;
-    private ContentResolver mContentResolver;
-
-    /**
-     * Start the web restriction provider and setup the content resolver.
-     */
-    WebRestrictionsClient() {}
-
-    void init(String authority, final long nativeProvider) {
-        assert !TextUtils.isEmpty(authority);
-        Uri baseUri = new Uri.Builder().scheme("content").authority(authority).build();
-        mQueryUri = Uri.withAppendedPath(baseUri, "authorized");
-        mRequestUri = Uri.withAppendedPath(baseUri, "requested");
-        mContentResolver = ContextUtils.getApplicationContext().getContentResolver();
-        mContentObserver = new ContentObserver(null) {
-            @Override
-            public void onChange(boolean selfChange) {
-                onChange(selfChange, null);
-            }
-
-            @Override
-            public void onChange(boolean selfChange, Uri uri) {
-                nativeNotifyWebRestrictionsChanged(nativeProvider);
-            }
-        };
-        mContentResolver.registerContentObserver(baseUri, true, mContentObserver);
-    }
-
-    /**
-     * Simple helper method to expose the constructor over JNI.
-     */
-    @CalledByNative
-    private static WebRestrictionsClient create(String authority, long nativeProvider) {
-        // Check for a mock for testing.
-        WebRestrictionsClient client = sMock == null ? new WebRestrictionsClient() : sMock;
-        client.init(authority, nativeProvider);
-        return client;
-    }
-
-    /**
-     * @return whether the web restriction provider supports requesting access for a blocked url.
-     */
-    @CalledByNative
-    boolean supportsRequest() {
-        return mContentResolver != null && mContentResolver.getType(mRequestUri) != null;
-    }
-
-    /**
-     * Called when the ContentResolverWebRestrictionsProvider is about to be destroyed.
-     */
-    @CalledByNative
-    void onDestroy() {
-        mContentResolver.unregisterContentObserver(mContentObserver);
-    }
-
-    /**
-     * Whether we can proceed with loading the {@code url}.
-     * In case the url is not to be loaded, the web restriction provider can return an optional
-     * error page to show instead.
-     */
-    @CalledByNative
-    ShouldProceedResult shouldProceed(final String url) {
-        String select = String.format("url = '%s'", url);
-        return new ShouldProceedResult(mContentResolver.query(mQueryUri, null, select, null, null));
-    }
-
-    /**
-     * Request permission to load the {@code url}.
-     * The web restriction provider returns a {@code boolean} variable indicating whether it was
-     * able to forward the request to the appropriate authority who can approve it.
-     */
-    @CalledByNative
-    boolean requestPermission(final String url) {
-        ContentValues values = new ContentValues(1);
-        values.put("url", url);
-        return mContentResolver.insert(mRequestUri, values) != null;
-    }
-
-    native void nativeNotifyWebRestrictionsChanged(long ptrProvider);
-
-    /**
-     * Allow a mock for of the class for C++ unit testing.
-     * @param mock the mock
-     */
-    protected static void registerMockForTesting(WebRestrictionsClient mock) {
-        sMock = mock;
-    }
-}