Upstream ContentView.getNavigationHistory()

content/public/android/java/src/org/chromium/content/browser/NavigationHistory.java

Index: content/public/android/java/src/org/chromium/content/browser/NavigationHistory.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/NavigationHistory.java b/content/public/android/java/src/org/chromium/content/browser/NavigationHistory.java
new file mode 100644
index 0000000000000000000000000000000000000000..ff1fcf9659e91fac0535fe53929e702e050ae3f3
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/browser/NavigationHistory.java
@@ -0,0 +1,49 @@
+// Copyright (c) 2012 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.content.browser;
+
+import java.util.ArrayList;
+
+/**
+ * {@link NavigationHistory} captures a snapshot of the navigation history of a
+ * {@link ContentView}. It is a copy and will not be updated as navigation
+ * occurs on the source {@link ContentView}.
+ */
+public class NavigationHistory {
+
+    private ArrayList<NavigationEntry> entries = new ArrayList<NavigationEntry>();
+    private int mCurrentEntryIndex;
+
+    /* package */ void addEntry(NavigationEntry entry) {
+        entries.add(entry);
+    }
+
+    /* package */ void setCurrentEntryIndex(int currentEntryIndex) {
+        mCurrentEntryIndex = currentEntryIndex;
+    }
+
+    /**
+     * @return The number of entries in the history.
+     */
+    public int getEntryCount() {
+        return entries.size();
+    }
+
+    /**
+     * Returns the {@link NavigationEntry} for the given index.
+     */
+    public NavigationEntry getEntryAtIndex(int index) {
+        return entries.get(index);
+    }
+
+    /**
+     * Returns the index of the entry the {@link ContentView} was navigated to
+     * when the history was fetched.
+     */
+    public int getCurrentEntryIndex() {
+        return mCurrentEntryIndex;
+    }
+
+}