[DevTools] Remove V8InspectorSession::backtraceObjectGroup.

third_party/WebKit/Source/platform/v8_inspector/V8InspectorSessionImpl.cpp

 // Copyright 2016 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 "platform/v8_inspector/V8InspectorSessionImpl.h"
 
 #include "platform/inspector_protocol/Parser.h"
 #include "platform/v8_inspector/InjectedScript.h"
 #include "platform/v8_inspector/InspectedContext.h"
 #include "platform/v8_inspector/RemoteObjectId.h"
 #include "platform/v8_inspector/V8ConsoleAgentImpl.h"
 #include "platform/v8_inspector/V8DebuggerAgentImpl.h"
 #include "platform/v8_inspector/V8DebuggerImpl.h"
 #include "platform/v8_inspector/V8HeapProfilerAgentImpl.h"
 #include "platform/v8_inspector/V8ProfilerAgentImpl.h"
 #include "platform/v8_inspector/V8RuntimeAgentImpl.h"
 #include "platform/v8_inspector/public/V8ContextInfo.h"
 #include "platform/v8_inspector/public/V8DebuggerClient.h"
 
 namespace blink {
 
-const char V8InspectorSession::backtraceObjectGroup[] = "backtrace";
-
 // static
 bool V8InspectorSession::canDispatchMethod(const String16& method)
 {
     return method.startWith(protocol::Runtime::Metainfo::commandPrefix)
         || method.startWith(protocol::Debugger::Metainfo::commandPrefix)
         || method.startWith(protocol::Profiler::Metainfo::commandPrefix)
         || method.startWith(protocol::HeapProfiler::Metainfo::commandPrefix)
         || method.startWith(protocol::Console::Metainfo::commandPrefix);
 }
 
@@ skipping 275 matching lines @@
     m_debuggerAgent->resume(&errorString);
 }
 
 void V8InspectorSessionImpl::stepOver()
 {
     ErrorString errorString;
     m_debuggerAgent->stepOver(&errorString);
 }
 
 } // namespace blink