Rewrite std::string("") to std::string(), Linux edition.

chrome/browser/ui/fullscreen/fullscreen_controller_state_test.cc

 // Copyright (c) 2012 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/ui/fullscreen/fullscreen_controller_state_test.h"
 
 #include <memory.h>
 
 #include <iomanip>
 #include <iostream>
@@ skipping 640 matching lines @@
     // Cache result so that a search is not required next time.
     state_transitions_[source][destination] = result;
   }
 
   return state_transitions_[source][destination];
 }
 
 std::string FullscreenControllerStateTest::GetAndClearDebugLog() {
   debugging_log_ << "(End of Debugging Log)\n";
   std::string output_log = "\nDebugging Log:\n" + debugging_log_.str();
-  debugging_log_.str("");
+  debugging_log_.str(std::string());
   return output_log;
 }
 
 bool FullscreenControllerStateTest::ShouldSkipStateAndEventPair(State state,
                                                                 Event event) {
   // TODO(scheib) Toggling Tab fullscreen while pending Tab or
   // Browser fullscreen is broken currently http://crbug.com/154196
   if ((state == STATE_TO_BROWSER_FULLSCREEN_NO_CHROME ||
        state == STATE_TO_BROWSER_FULLSCREEN_WITH_CHROME ||
        state == STATE_TO_TAB_FULLSCREEN) &&
@@ skipping 146 matching lines @@
         << std::right << std::setw(2)
         << info.distance
         << " }, // "
         << GetStateString(state2) << "\n";
     }
     output << "},\n";
   }
   output << "};";
   return output.str();
 }