Clean up StrictMode.allowThreadDiskReads calls.

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

 // Copyright 2013 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.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Rect;
@@ skipping 133 matching lines @@
         Runnable openRunnable = new Runnable() {
             @Override
             public void run() {
                 // Not passing InputMethodManager.SHOW_IMPLICIT as it does not trigger the
                 // keyboard in landscape mode.
                 InputMethodManager imm =
                         (InputMethodManager) view.getContext().getSystemService(
                                 Context.INPUT_METHOD_SERVICE);
                 // Third-party touches disk on showSoftInput call. http://crbug.com/619824,
                 // http://crbug.com/635118
-                StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
-                StrictMode.allowThreadDiskWrites();
+                StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskWrites();
                 try {
                     imm.showSoftInput(view, 0);
                 } catch (IllegalArgumentException e) {
                     if (attempt.incrementAndGet() <= KEYBOARD_RETRY_ATTEMPTS) {
                         handler.postDelayed(this, KEYBOARD_RETRY_DELAY_MS);
                     } else {
                         Log.e(TAG, "Unable to open keyboard.  Giving up.", e);
                     }
                 } finally {
                     StrictMode.setThreadPolicy(oldPolicy);
@@ skipping 214 matching lines @@
      * attached to the view hierarchy.
      *
      * @param view The view to be removed from the parent.
      */
     public static void removeViewFromParent(View view) {
         ViewGroup parent = (ViewGroup) view.getParent();
         if (parent == null) return;
         parent.removeView(view);
     }
 }