Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/printing/print_dialog_cloud_unittest.cc

 // Copyright (c) 2011 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/print_dialog_cloud.h"
 #include "chrome/browser/printing/print_dialog_cloud_internal.h"
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 using content::WebContents;
+using content::WebUIMessageHandler;
 using testing::A;
 using testing::AtLeast;
 using testing::Eq;
 using testing::HasSubstr;
 using testing::IsNull;
 using testing::NotNull;
 using testing::Return;
 using testing::StrEq;
 using testing::_;
 
@@ skipping 304 matching lines @@
   delegate_->GetWebUIMessageHandlers(&handlers);
   delegate_.reset();
   EXPECT_THAT(mock_flow_handler_.get(), NotNull());
 }
 
 // Testing for ExternalHtmlDialogUI needs a mock TabContents, mock
 // CloudPrintHtmlDialogDelegate (provided through the mock
 // tab_contents)
 
 // Testing for PrintDialogCloud needs a mock Browser.