Remove explicit keyword from multi-argument constructors

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 63 matching lines @@
                    << "' (expected '" << expected_string << "')";
   return false;
 }
 
 namespace internal_cloud_print_helpers {
 
 class MockCloudPrintFlowHandler
     : public CloudPrintFlowHandler,
       public base::SupportsWeakPtr<MockCloudPrintFlowHandler> {
  public:
-  explicit MockCloudPrintFlowHandler(const FilePath& path,
-                                     const string16& title,
-                                     const std::string& file_type)
+  MockCloudPrintFlowHandler(const FilePath& path,
+                            const string16& title,
+                            const std::string& file_type)
       : CloudPrintFlowHandler(path, title, file_type) {}
   MOCK_METHOD0(DestructorCalled, void());
   MOCK_METHOD0(RegisterMessages, void());
   MOCK_METHOD3(Observe,
                void(int type,
                     const NotificationSource& source,
                     const NotificationDetails& details));
   MOCK_METHOD1(SetDialogDelegate,
                void(CloudPrintHtmlDialogDelegate* delegate));
   MOCK_METHOD0(CreateCloudPrintDataSender,
@@ skipping 241 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.