Support setting mouse cursor icon in Android N.

content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java

Index: content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java
diff --git a/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java
index 7106f5dbb4ef104f3a17abfefbf9fe382d00e56f..7f7048219b3e322d508732e44b9649fc991cea92 100644
--- a/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java
+++ b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellActivityTestRule.java
@@ -21,6 +21,7 @@ import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.NavigationController;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_shell.Shell;
+import org.chromium.content_shell.ShellViewAndroidDelegate.OnCursorUpdateHelper;
 import org.chromium.content_shell_apk.ContentShellTestCommon.TestCommonCallback;
 
 import java.lang.annotation.ElementType;
@@ -75,6 +76,13 @@ public class ContentShellActivityTestRule extends ActivityTestRule<ContentShellA
         return mDelegate.launchContentShellWithUrlSync(url);
     }
 
+    /**
+     * Returns the OnCursorUpdateHelper.
+     */
+    public OnCursorUpdateHelper getOnCursorUpdateHelper() throws ExecutionException {
+        return mDelegate.getOnCursorUpdateHelper();
+    }
+
     /**
      * Returns the current ContentViewCore or null if there is no ContentView.
      */