[Android History] Add tests for removing items

chrome/android/javatests/src/org/chromium/chrome/browser/history/StubbedHistoryProvider.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/history/StubbedHistoryProvider.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/history/StubbedHistoryProvider.java b/chrome/android/javatests/src/org/chromium/chrome/browser/history/StubbedHistoryProvider.java
new file mode 100644
index 0000000000000000000000000000000000000000..84091e7f9f787ada2fef841a4cfe633314b87d55
--- /dev/null
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/history/StubbedHistoryProvider.java
@@ -0,0 +1,65 @@
+// Copyright 2017 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.history;
+
+import org.chromium.base.test.util.CallbackHelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Stubs out the backends used by the native Android browsing history manager.
+ */
+public class StubbedHistoryProvider implements HistoryProvider {
+    public final CallbackHelper markItemForRemovalCallback = new CallbackHelper();
+    public final CallbackHelper removeItemsCallback = new CallbackHelper();
+
+    private BrowsingHistoryObserver mObserver;
+    private List<HistoryItem> mItems = new ArrayList<>();
+    private List<HistoryItem> mRemovedItems = new ArrayList<>();
+
+    @Override
+    public void setObserver(BrowsingHistoryObserver observer) {
+        mObserver = observer;
+    }
+
+    @Override
+    public void queryHistory(String query, long endQueryTime) {
+        mObserver.onQueryHistoryComplete(mItems, false);
+    }
+
+    @Override
+    public void markItemForRemoval(HistoryItem item) {
+        mRemovedItems.add(item);
+        markItemForRemovalCallback.notifyCalled();
+    }
+
+    @Override
+    public void removeItems() {
+        for (HistoryItem item : mRemovedItems) {
+            mItems.remove(item);
+        }
+        mRemovedItems.clear();
+        removeItemsCallback.notifyCalled();
+    }
+
+    @Override
+    public void destroy() {}
+
+    public void addItem(HistoryItem item) {
+        mItems.add(item);
+    }
+
+    public static HistoryItem createHistoryItem(int which, long[] timestamps) {
+        if (which == 0) {
+            return new HistoryItem("http://google.com/", "www.google.com", "Google", timestamps);
+        } else if (which == 1) {
+            return new HistoryItem("http://foo.com/", "www.foo.com", "Foo", timestamps);
+        } else {
+            return null;
+        }
+    }
+
+}