Create Java infrastructure for UI Render Tests.

chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
index 2ece634b09b1e037a72a4b0bdb8b07086a5d5189..9ac48855d8b3979dddeed45bd3d0285f07acd296 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
@@ -8,6 +8,7 @@ import android.graphics.Bitmap;
 
 import org.chromium.base.Callback;
 import org.chromium.base.annotations.CalledByNative;
+import org.chromium.chrome.browser.ntp.snippets.SnippetsSource.SnippetsObserver;
 import org.chromium.chrome.browser.profiles.Profile;
 
 import java.util.ArrayList;
@@ -16,23 +17,13 @@ import java.util.List;
 /**
  * Provides access to the snippets to display on the NTP using the C++ NTP Snippets Service
  */
-public class SnippetsBridge {
+public class SnippetsBridge implements SnippetsSource {
     private static final String TAG = "SnippetsBridge";
 
     private long mNativeSnippetsBridge;
     private SnippetsObserver mObserver;
 
     /**
-     * An observer for events in the snippets service.
-     */
-    public interface SnippetsObserver {
-        void onSnippetsReceived(List<SnippetArticle> snippets);
-
-        /** Called when the service is about to change its state. */
-        void onDisabledReasonChanged(int disabledReason);
-    }
-
-    /**
      * Creates a SnippetsBridge for getting snippet data for the current user.
      *
      * @param profile Profile of the user that we will retrieve snippets for.
@@ -73,6 +64,7 @@ public class SnippetsBridge {
      *
      * @param snippet Snippet to discard.
      */
+    @Override
     public void discardSnippet(SnippetArticle snippet) {
         assert mNativeSnippetsBridge != 0;
         nativeDiscardSnippet(mNativeSnippetsBridge, snippet.mId);
@@ -81,6 +73,7 @@ public class SnippetsBridge {
     /**
      * Fetches the thumbnail image for a snippet.
      */
+    @Override
     public void fetchSnippetImage(SnippetArticle snippet, Callback<Bitmap> callback) {
         nativeFetchImage(mNativeSnippetsBridge, snippet.mId, callback);
     }
@@ -88,6 +81,7 @@ public class SnippetsBridge {
     /**
      * Checks whether a snippet has been visited by querying the history for the snippet's URL.
      */
+    @Override
     public void getSnippedVisited(SnippetArticle snippet, Callback<Boolean> callback) {
         assert mNativeSnippetsBridge != 0;
         nativeSnippetVisited(mNativeSnippetsBridge, callback, snippet.mUrl);
@@ -102,6 +96,7 @@ public class SnippetsBridge {
      * @param observer object to notify when snippets are received, or {@code null} if we want to
      *                 stop observing.
      */
+    @Override
     public void setObserver(SnippetsObserver observer) {
         assert mObserver == null || mObserver == observer;
 
@@ -109,6 +104,7 @@ public class SnippetsBridge {
         nativeSetObserver(mNativeSnippetsBridge, observer == null ? null : this);
     }
 
+    @Override
     public int getDisabledReason() {
         assert mNativeSnippetsBridge != 0;
         return nativeGetDisabledReason(mNativeSnippetsBridge);