Export GetLastCommittedEntryIndex and RemoveEntryAtIndex to Java layer

content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java

Index: content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java b/content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java
index 28759ed0d30ebf3d0615f030eb973c17bacbc19d..d039c8eac15574028962198bd4860aab0322fcec 100644
--- a/content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java
+++ b/content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java
@@ -210,6 +210,22 @@ import org.chromium.content_public.browser.NavigationHistory;
         return null;
     }
 
+    @Override
+    public int getLastCommittedEntryIndex() {
+        if (mNativeNavigationControllerAndroid != 0) {
+            return nativeGetLastCommittedEntryIndex(mNativeNavigationControllerAndroid);
+        }
+        return -1;
+    }
+
+    @Override
+    public boolean removeEntryAtIndex(int index) {
+        if (mNativeNavigationControllerAndroid != 0) {
+            return nativeRemoveEntryAtIndex(mNativeNavigationControllerAndroid, index);
+        }
+        return false;
+    }
+
     @CalledByNative
     private static void addToNavigationHistory(Object history, Object navigationEntry) {
         ((NavigationHistory) history).addEntry((NavigationEntry) navigationEntry);
@@ -264,4 +280,7 @@ import org.chromium.content_public.browser.NavigationHistory;
     private native void nativeSetUseDesktopUserAgent(long nativeNavigationControllerAndroid,
             boolean override, boolean reloadOnChange);
     private native NavigationEntry nativeGetPendingEntry(long nativeNavigationControllerAndroid);
+    private native int nativeGetLastCommittedEntryIndex(long nativeNavigationControllerAndroid);
+    private native boolean nativeRemoveEntryAtIndex(long nativeNavigationControllerAndroid,
+            int index);
 }