Reduce unnecessary usage of TextCaseSensitivity::TextCaseInsensitive.

third_party/WebKit/Source/bindings/core/v8/ScriptRegexp.cpp

 /*
  * Copyright (C) 2004, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Collabora Ltd.
  * Copyright (C) 2011 Peter Varga (pvarga@webkit.org), University of Szeged
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 29 matching lines @@
                            MultilineMode multilineMode,
                            CharacterMode charMode) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope handleScope(isolate);
   v8::Local<v8::Context> context =
       V8PerIsolateData::from(isolate)->ensureScriptRegexpContext();
   v8::Context::Scope contextScope(context);
   v8::TryCatch tryCatch(isolate);
 
   unsigned flags = v8::RegExp::kNone;
-  if (caseSensitivity == TextCaseInsensitive)
+  if (caseSensitivity != TextCaseSensitive)
     flags |= v8::RegExp::kIgnoreCase;
   if (multilineMode == MultilineEnabled)
     flags |= v8::RegExp::kMultiline;
   if (charMode == UTF16)
     flags |= v8::RegExp::kUnicode;
 
   v8::Local<v8::RegExp> regex;
   if (v8::RegExp::New(context, v8String(isolate, pattern),
                       static_cast<v8::RegExp::Flags>(flags))
           .ToLocal(&regex))
@@ skipping 58 matching lines @@
     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 blink