[Android] Expose WebContents IsLoading methods to java.

content/public/android/java/src/org/chromium/content_public/browser/WebContents.java

Index: content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java b/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
index e3de2bdf5ec789a8f50f602dd68cca2427efd905..a519d09905b0d14de7b31fca89868b909b4355dd 100644
--- a/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
+++ b/content/public/android/java/src/org/chromium/content_public/browser/WebContents.java
@@ -24,6 +24,17 @@ public interface WebContents {
     String getVisibleUrl();
 
     /**
+     * @return Whether this WebContents is loading a resource.
+     */
+    boolean isLoading();
+
+    /**
+     * @return Whether this WebContents is loading and and the load is to a different top-level
+     *         document (rather than being a navigation within the same document).
+     */
+    boolean isLoadingToDifferentDocument();
+
+    /**
      * Stop any pending navigation.
      */
     void stop();