[DevTools] Remove legacy code.

chrome/browser/devtools/devtools_ui_bindings.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 "chrome/browser/devtools/devtools_ui_bindings.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 801 matching lines @@
         "startPage",
         new base::StringValue(extensions::chrome_manifest_urls::GetDevToolsPage(
                                   extension.get()).spec()));
     extension_info->Set("name", new base::StringValue(extension->name()));
     extension_info->Set("exposeExperimentalAPIs",
                         new base::FundamentalValue(
                             extension->permissions_data()->HasAPIPermission(
                                 extensions::APIPermission::kExperimental)));
     results.Append(extension_info);
   }
-  // TODO(dgozman): remove the |WebInspector.addExtensions| call in M45.
-  CallClientFunction(
-      "(InspectorFrontendAPI.addExtensions || WebInspector.addExtensions)",
-      &results, NULL, NULL);
+  CallClientFunction("InspectorFrontendAPI.addExtensions",
+                     &results, NULL, NULL);
 }
 
 void DevToolsUIBindings::SetDelegate(Delegate* delegate) {
   delegate_.reset(delegate);
 }
 
 void DevToolsUIBindings::AttachTo(
     const scoped_refptr<content::DevToolsAgentHost>& agent_host) {
   if (agent_host_.get())
     Detach();
@@ skipping 58 matching lines @@
   if (frontend_loaded_)
     return;
   frontend_loaded_ = true;
 
   // Call delegate first - it seeds importants bit of information.
   delegate_->OnLoadCompleted();
 
   UpdateTheme();
   AddDevToolsExtensionsToClient();
 }