Replace a few hard-coded strings with their constant counterparts.

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

 // Copyright (c) 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;
 
 import android.app.Activity;
 import android.content.ContentResolver;
 import android.content.Intent;
 import android.database.Cursor;
@@ skipping 71 matching lines @@
 
         Intent getContentIntent = new Intent(Intent.ACTION_GET_CONTENT);
         getContentIntent.addCategory(Intent.CATEGORY_OPENABLE);
         ArrayList<Intent> extraIntents = new ArrayList<Intent>();
         if (!noSpecificType()) {
             // Create a chooser based on the accept type that was specified in the webpage. Note
             // that if the web page specified multiple accept types, we will have built a generic
             // chooser above.
             if (shouldShowImageTypes()) {
                 extraIntents.add(camera);
-                getContentIntent.setType("image/*");
+                getContentIntent.setType(ALL_IMAGE_TYPES);
             } else if (shouldShowVideoTypes()) {
                 extraIntents.add(camcorder);
-                getContentIntent.setType("video/*");
+                getContentIntent.setType(ALL_VIDEO_TYPES);
             } else if (shouldShowAudioTypes()) {
                 extraIntents.add(soundRecorder);
-                getContentIntent.setType("audio/*");
+                getContentIntent.setType(ALL_AUDIO_TYPES);
             }
         }
 
         if (extraIntents.isEmpty()) {
             // We couldn't resolve an accept type, so fallback to a generic chooser.
-            getContentIntent.setType("*/*");
+            getContentIntent.setType(ANY_TYPES);
             extraIntents.add(camera);
             extraIntents.add(camcorder);
             extraIntents.add(soundRecorder);
         }
 
         chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS,
                 extraIntents.toArray(new Intent[] { }));
 
         chooser.putExtra(Intent.EXTRA_INTENT, getContentIntent);
 
@@ skipping 129 matching lines @@
 
     @CalledByNative
     private static SelectFileDialog create(int nativeSelectFileDialog) {
         return new SelectFileDialog(nativeSelectFileDialog);
     }
 
     private native void nativeOnFileSelected(int nativeSelectFileDialogImpl,
             String filePath);
     private native void nativeOnFileNotSelected(int nativeSelectFileDialogImpl);
 }