Pure pedantry: Replace all ".size() == 0" with ".empty()".

chrome/browser/debugger/debugger_remote_service.cc

 // Copyright (c) 2010 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.
 
 // This file contains implementations of the DebuggerRemoteService methods,
 // defines DebuggerRemoteService and DebuggerRemoteServiceCommand constants.
 
 #include "chrome/browser/debugger/debugger_remote_service.h"
 
 #include "base/json/json_reader.h"
@@ skipping 61 matching lines @@
   if (!content->HasKey(kCommandKey)) {
     NOTREACHED();  // Broken protocol :(
     return;
   }
   std::string command;
   DictionaryValue response;
 
   content->GetString(kCommandKey, &command);
   response.SetString(kCommandKey, command);
   bool send_response = true;
-  if (destination.size() == 0) {
+  if (destination.empty()) {
     // Unknown command (bad format?)
     NOTREACHED();
     response.SetInteger(kResultKey, RESULT_UNKNOWN_COMMAND);
     SendResponse(response, message.tool(), message.destination());
     return;
   }
   int32 tab_uid = -1;
   base::StringToInt(destination, &tab_uid);
 
   if (command == DebuggerRemoteServiceCommand::kAttach) {
@@ skipping 234 matching lines @@
     // No RenderViewHost
     response->SetInteger(kResultKey, RESULT_UNKNOWN_TAB);
     return true;
   }
   std::string javascript;
   content->GetString(kDataKey, &javascript);
   render_view_host->ExecuteJavascriptInWebFrame(string16(),
                                                 UTF8ToUTF16(javascript));
   return false;
 }