Photo Picker dialog: Add a test.

ui/android/java/src/org/chromium/ui/base/SelectFileDialog.java

 // Copyright 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.ui.base;
 
 import android.Manifest;
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
@@ skipping 20 matching lines @@
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.ui.PhotoPickerListener;
 import org.chromium.ui.R;
 import org.chromium.ui.UiUtils;
 
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
 /**
  * A dialog that is triggered from a file input field that allows a user to select a file based on
  * a set of accepted file types. The path of the selected file is passed to the native dialog.
  */
 @JNINamespace("ui")
 @MainDex
 public class SelectFileDialog implements WindowAndroid.IntentCallback,
                                          WindowAndroid.PermissionCallback, PhotoPickerListener {
@@ skipping 260 matching lines @@
                 }
                 break;
 
             case LAUNCH_CAMERA:
                 new GetCameraIntentTask(true, mWindowAndroid, this)
                         .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
                 break;
         }
     }
 
-    @Override
-    public Map<String, Long> getFilesForTesting() {
-        return null;
-    }
-
     private class GetCameraIntentTask extends AsyncTask<Void, Void, Uri> {
         private Boolean mDirectToCamera;
         private WindowAndroid mWindow;
         private WindowAndroid.IntentCallback mCallback;
 
         public GetCameraIntentTask(Boolean directToCamera, WindowAndroid window,
                 WindowAndroid.IntentCallback callback) {
             mDirectToCamera = directToCamera;
             mWindow = window;
             mCallback = callback;
@@ skipping 315 matching lines @@
     static SelectFileDialog create(long nativeSelectFileDialog) {
         return new SelectFileDialog(nativeSelectFileDialog);
     }
 
     private native void nativeOnFileSelected(long nativeSelectFileDialogImpl,
             String filePath, String displayName);
     private native void nativeOnMultipleFilesSelected(long nativeSelectFileDialogImpl,
             String[] filePathArray, String[] displayNameArray);
     private native void nativeOnFileNotSelected(long nativeSelectFileDialogImpl);
 }