[inspector] replaced inspector/Atomics.h with base atomicops.h

src/inspector/BUILD.gn

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("../../gni/v8.gni")
 
 _inspector_protocol = "//third_party/WebKit/Source/platform/inspector_protocol"
 import("$_inspector_protocol/inspector_protocol.gni")
 
 _protocol_generated = [
@@ skipping 117 matching lines @@
   ]
   sources = rebase_path(_protocol_generated, ".", target_gen_dir)
   sources += [
     "../../include/v8-inspector-protocol.h",
     "../../include/v8-inspector.h",
   ]
   sources += get_target_outputs(":inspector_injected_script")
   sources += get_target_outputs(":inspector_debugger_script")
   sources += [
     "Allocator.h",
-    "Atomics.h",
     "InjectedScript.cpp",
     "InjectedScript.h",
     "InjectedScriptNative.cpp",
     "InjectedScriptNative.h",
     "InspectedContext.cpp",
     "InspectedContext.h",
     "JavaScriptCallFrame.cpp",
     "JavaScriptCallFrame.h",
     "ProtocolPlatform.h",
     "RemoteObjectId.cpp",
@@ skipping 36 matching lines @@
     "V8RuntimeAgentImpl.cpp",
     "V8RuntimeAgentImpl.h",
     "V8SchemaAgentImpl.cpp",
     "V8SchemaAgentImpl.h",
     "V8StackTraceImpl.cpp",
     "V8StackTraceImpl.h",
     "V8ValueCopier.cpp",
     "V8ValueCopier.h",
   ]
 }