Add a one-time notice about other forms of browsing history.

chrome/android/java/res/layout/other_forms_of_history_dialog.xml

Index: chrome/android/java/res/layout/other_forms_of_history_dialog.xml
diff --git a/chrome/android/java/res/layout/other_forms_of_history_dialog.xml b/chrome/android/java/res/layout/other_forms_of_history_dialog.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f6d25e86c1b8901420b9ff9d376ca82efc6ef11a
--- /dev/null
+++ b/chrome/android/java/res/layout/other_forms_of_history_dialog.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2016 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. -->
+
+<!-- Layout used by ClearBrowsingDataPreferences for a dialog about other
+     forms of browsing history. -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    style="@style/AlertDialogContent">
+
+  <org.chromium.ui.widget.TextViewWithClickableSpans
+      android:id="@+id/text"
+      android:text="@string/clear_browsing_data_history_dialog_data_text"
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:textAppearance="?android:attr/textAppearanceMedium"
+      android:paddingTop="10dp"
+      android:paddingBottom="20dp" />
+
+</LinearLayout>