Simplify VersionInfo code, avoid hitting sandbox IPC constantly on Windows

chrome/browser/ui/webui/help/help_handler.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/webui/help/help_handler.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 294 matching lines @@
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
 // static
 base::string16 HelpHandler::BuildBrowserVersionString() {
   chrome::VersionInfo version_info;
-  DCHECK(version_info.is_valid());
 
   std::string version = version_info.Version();
 
   std::string modifier = chrome::VersionInfo::GetVersionStringModifier();
   if (!modifier.empty())
     version += " " + modifier;
 
 #if defined(ARCH_CPU_64_BITS)
   version += " (64-bit)";
 #endif
@@ skipping 227 matching lines @@
   web_ui()->CallJavascriptFunction(
       "help.HelpPage.updateCurrentChannel", base::StringValue(channel));
 }
 
 void HelpHandler::OnTargetChannel(const std::string& channel) {
   web_ui()->CallJavascriptFunction(
       "help.HelpPage.updateTargetChannel", base::StringValue(channel));
 }
 
 #endif // defined(OS_CHROMEOS)