[Extensions] Remove unused version of ScriptContext::CallFunction()

extensions/renderer/script_context.cc

 // Copyright 2014 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 "extensions/renderer/script_context.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/strings/string_split.h"
@@ skipping 201 matching lines @@
   v8::Local<v8::Object> global = v8_context()->Global();
   if (web_frame_) {
     web_frame_->requestExecuteV8Function(v8_context(), function, global, argc,
                                          argv, nullptr);
   } else {
     // TODO(devlin): This probably isn't safe.
     function->Call(global, argc, argv);
   }
 }
 
-v8::Local<v8::Value> ScriptContext::CallFunction(
-    const v8::Local<v8::Function>& function) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return CallFunction(function, 0, nullptr);
-}
-
 Feature::Availability ScriptContext::GetAvailability(
     const std::string& api_name) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (base::StartsWith(api_name, "test", base::CompareCase::SENSITIVE)) {
     bool allowed = base::CommandLine::ForCurrentProcess()->
                        HasSwitch(::switches::kTestType);
     Feature::AvailabilityResult result =
         allowed ? Feature::IS_AVAILABLE : Feature::MISSING_COMMAND_LINE_SWITCH;
     return Feature::Availability(result,
                                  allowed ? "" : "Only allowed in tests");
@@ skipping 280 matching lines @@
     v8::Local<v8::Value> argv[]) {
   return context_->CallFunction(function, argc, argv);
 }
 
 gin::ContextHolder* ScriptContext::Runner::GetContextHolder() {
   v8::HandleScope handle_scope(context_->isolate());
   return gin::PerContextData::From(context_->v8_context())->context_holder();
 }
 
 }  // namespace extensions