Fixed browser crash when using Debug build:

chrome/renderer/benchmarking_extension.cc

Index: chrome/renderer/benchmarking_extension.cc
diff --git a/chrome/renderer/benchmarking_extension.cc b/chrome/renderer/benchmarking_extension.cc
index f74714f52c9a22ae9a8288c6065e15ca3ef1cadc..4e235cea300fd0b24450b7689f798620e48407f5 100644
--- a/chrome/renderer/benchmarking_extension.cc
+++ b/chrome/renderer/benchmarking_extension.cc
@@ -41,10 +41,6 @@ class BenchmarkingWrapper : public v8::Extension {
         "  native function ClearPredictorCache();"
         "  ClearPredictorCache();"
         "};"
-        "chrome.benchmarking.closeConnections = function() {"
-        "  native function CloseConnections();"
-        "  CloseConnections();"
-        "};"
         "chrome.benchmarking.counter = function(name) {"
         "  native function GetCounter();"
         "  return GetCounter(name);"
@@ -81,9 +77,7 @@ class BenchmarkingWrapper : public v8::Extension {
 
   virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
       v8::Handle<v8::String> name) {
-    if (name->Equals(v8::String::New("CloseConnections"))) {
-      return v8::FunctionTemplate::New(CloseConnections);
-    } else if (name->Equals(v8::String::New("ClearCache"))) {
+    if (name->Equals(v8::String::New("ClearCache"))) {
       return v8::FunctionTemplate::New(ClearCache);
     } else if (name->Equals(v8::String::New("ClearHostResolverCache"))) {
       return v8::FunctionTemplate::New(ClearHostResolverCache);
@@ -102,12 +96,6 @@ class BenchmarkingWrapper : public v8::Extension {
     return v8::Handle<v8::FunctionTemplate>();
   }
 
-  static v8::Handle<v8::Value> CloseConnections(const v8::Arguments& args) {
-    content::RenderThread::Get()->Send(
-        new ChromeViewHostMsg_CloseCurrentConnections());
-    return v8::Undefined();
-  }
-
   static v8::Handle<v8::Value> ClearCache(const v8::Arguments& args) {
     int rv;
     content::RenderThread::Get()->Send(new ChromeViewHostMsg_ClearCache(&rv));