Removed redundant PrintingUIWebContentsObserver.

chrome/browser/printing/printing_ui_web_contents_observer.cc

Index: chrome/browser/printing/printing_ui_web_contents_observer.cc
diff --git a/chrome/browser/printing/printing_ui_web_contents_observer.cc b/chrome/browser/printing/printing_ui_web_contents_observer.cc
deleted file mode 100644
index 71932c2f685881859c0fecd78ea08aebe5113d9e..0000000000000000000000000000000000000000
--- a/chrome/browser/printing/printing_ui_web_contents_observer.cc
+++ /dev/null
@@ -1,27 +0,0 @@
-// 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.
-
-#include "chrome/browser/printing/printing_ui_web_contents_observer.h"
-
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/web_contents.h"
-
-namespace printing {
-
-PrintingUIWebContentsObserver::PrintingUIWebContentsObserver(
-    content::WebContents* web_contents)
-    : content::WebContentsObserver(web_contents) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-}
-
-PrintingUIWebContentsObserver::~PrintingUIWebContentsObserver() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-}
-
-gfx::NativeView PrintingUIWebContentsObserver::GetParentView() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-  return web_contents() ? web_contents()->GetNativeView() : NULL;
-}
-
-}  // namespace printing