Implement additional parts of the new ui for CBD.

chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTab.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTab.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTab.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTab.java
new file mode 100644
index 0000000000000000000000000000000000000000..3eb86b9f84e2188ea99172a004aaef6357d58f41
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTab.java
@@ -0,0 +1,61 @@
+// 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.preferences.privacy;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import org.chromium.chrome.R;
+
+/**
+ * The base class for a clear browsing data tab.
+ */
+public class ClearBrowsingDataPreferencesTab extends ClearBrowsingDataPreferences {
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        // Replace default preference view with a view with a footer.

[Theresa, 2017/01/27 03:30:11]

There are some extra words in this sentence.

[Theresa, 2017/01/27 03:31:45]

Or maybe there aren't? This may be more clear if it said "Replace default
preferences view with custom XML that contains a footer" or something like that.

[dullweber, 2017/01/30 11:36:44]

thanks, that sounds better

+        View view = inflater.inflate(R.layout.clear_browsing_data_tab_content, container, false);
+
+        Button clearButton = (Button) view.findViewById(R.id.clear_button);
+        clearButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onClearButtonClicked();
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    protected int getPreferenceXmlId() {
+        return R.xml.clear_browsing_data_preferences_tab;
+    }
+
+    @Override
+    protected void initButtonPreference() {
+        // This view has a Button instead of a ButtonPreference. The Button can only be initialized
+        // while or after onCreateView was called.
+    }
+
+    @Override
+    protected void initFootnote() {
+        // This view doesn't have a footnote.
+    }
+
+    @Override
+    protected void updateButtonState() {
+        // The clear button in this view is part of the footer, so it can't be a PreferenceButton
+        // like the clear button in ClearBrowsingDataPreferences. This makes it necessary to have a
+        // different listener and a different method to disable the button.
+        Button clearButton = (Button) getView().findViewById(R.id.clear_button);
+        boolean isEnabled = !getSelectedOptions().isEmpty();
+        clearButton.setEnabled(isEnabled);
+    }
+}