Fix printing unittests after revert of r230235

printing/printing_context_win_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 <ocidl.h>
 #include <commdlg.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/run_loop.h"
 #include "printing/backend/printing_info_win.h"
 #include "printing/printing_test.h"
 #include "printing/printing_context.h"
 #include "printing/printing_context_win.h"
 #include "printing/print_settings.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // This test is automatically disabled if no printer is available.
 class PrintingContextTest : public PrintingTest<testing::Test> {
  public:
   void PrintSettingsCallback(printing::PrintingContext::Result result) {
     result_ = result;
-    base::MessageLoop::current()->QuitWhenIdle();
   }
 
  protected:
   printing::PrintingContext::Result result() const { return result_; }
 
  private:
   printing::PrintingContext::Result result_;
 };
 
 // This is a fake PrintDlgEx implementation that sets the right fields in
@@ skipping 117 matching lines @@
   EXPECT_EQ(printing::PrintingContext::OK, context->InitWithSettings(settings));
 
   // The print may lie to use and may not support world transformation.
   // Verify right now.
   XFORM random_matrix = { 1, 0.1f, 0, 1.5f, 0, 1 };
   EXPECT_TRUE(SetWorldTransform(context->context(), &random_matrix));
   EXPECT_TRUE(ModifyWorldTransform(context->context(), NULL, MWT_IDENTITY));
 }
 
 TEST_F(PrintingContextTest, PrintAll) {
-  base::MessageLoopForUI loop;
   if (IsTestCaseDisabled())
     return;
 
   std::string dummy_locale;
   printing::PrintingContextWin context(dummy_locale);
   context.SetPrintDialog(&PrintDlgExMock);
   context.AskUserForSettings(
       NULL, 123, false, base::Bind(&PrintingContextTest::PrintSettingsCallback,
                                    base::Unretained(this)));
-  base::RunLoop().Run();
   EXPECT_EQ(printing::PrintingContext::OK, result());
-
   printing::PrintSettings settings = context.settings();
   EXPECT_EQ(settings.ranges().size(), 0);
 }