[inspector] Build inspector under v8_enable_inspector build flag.

src/inspector/V8Regex.cpp

 // 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.
 
 #include "src/inspector/V8Regex.h"
 
 #include "src/inspector/StringUtil.h"
-#include "src/inspector/V8Compat.h"
 #include "src/inspector/V8InspectorImpl.h"
-#include "src/inspector/public/V8InspectorClient.h"
+
+#include "include/v8-inspector.h"
 
 #include <limits.h>
 
 namespace v8_inspector {
 
 V8Regex::V8Regex(V8InspectorImpl* inspector, const String16& pattern,
                  bool caseSensitive, bool multiline)
     : m_inspector(inspector) {
   v8::Isolate* isolate = m_inspector->isolate();
   v8::HandleScope handleScope(isolate);
@@ skipping 63 matching lines @@
   if (matchLength) {
     v8::Local<v8::Value> match;
     if (!result->Get(context, 0).ToLocal(&match)) return -1;
     *matchLength = match.As<v8::String>()->Length();
   }
 
   return matchOffset.As<v8::Int32>()->Value() + startFrom;
 }
 
 }  // namespace v8_inspector