[DevTools] Remove V8ContentSearchUtil.

third_party/WebKit/Source/platform/v8_inspector/v8_inspector.gyp

 # 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.
 
 {
   'variables': {
     'blink_platform_output_dir': '<(SHARED_INTERMEDIATE_DIR)/blink/platform',
   },
   'targets': [
     {
@@ skipping 214 matching lines @@
         'V8ProfilerAgentImpl.h',
         'V8Regex.cpp',
         'V8Regex.h',
         'V8RuntimeAgentImpl.cpp',
         'V8RuntimeAgentImpl.h',
         'V8StackTraceImpl.cpp',
         'V8StackTraceImpl.h',
         'V8StringUtil.cpp',
         'V8StringUtil.h',
         'public/V8EventListenerInfo.h',
-        'public/V8ContentSearchUtil.h',
         'public/V8ContextInfo.h',
         'public/V8Debugger.h',
         'public/V8DebuggerClient.h',
         'public/V8HeapProfilerAgent.h',
         'public/V8Inspector.cpp',
         'public/V8Inspector.h',
         'public/V8InspectorSession.h',
         'public/V8StackTrace.h',
 
         '<(blink_platform_output_dir)/v8_inspector/DebuggerScript.h',
         '<(blink_platform_output_dir)/v8_inspector/InjectedScriptSource.h',
       ],
     },
   ],  # targets
 }