Move RenderBlockFlow::constructTextRun out.

Source/core/rendering/TextRunConstructor.h

Index: Source/core/rendering/TextRunConstructor.h
diff --git a/Source/core/rendering/TextRunConstructor.h b/Source/core/rendering/TextRunConstructor.h
new file mode 100644
index 0000000000000000000000000000000000000000..8519315cf0fb64248063c8da3b519b2590a5c0e7
--- /dev/null
+++ b/Source/core/rendering/TextRunConstructor.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ *           (C) 2007 David Smith (catfish.man@gmail.com)
+ * Copyright (C) 2003-2013 Apple Inc. All rights reserved.
+ * Copyright (C) Research In Motion Limited 2010. All rights reserved.
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TextRunConstructor_h
+#define TextRunConstructor_h
+
+#include "platform/text/TextDirection.h"
+#include "platform/text/TextRun.h"
+#include "wtf/text/WTFString.h"
+#include "wtf/unicode/Unicode.h"
+
+namespace WebCore {
+
+class Font;
+class RenderObject;
+class RenderStyle;
+class RenderText;
+
+enum TextRunFlag {
+    DefaultTextRunFlags = 0,
+    RespectDirection = 1 << 0,
+    RespectDirectionOverride = 1 << 1
+};
+
+typedef unsigned TextRunFlags;
+
+// Direction resolved from string value.
+TextRun constructTextRun(RenderObject* context, const Font&, const String&, RenderStyle*,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, TextRunFlags = DefaultTextRunFlags);
+TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, unsigned offset, unsigned length, RenderStyle*,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+// Explicit direction.
+TextRun constructTextRun(RenderObject* context, const Font&, const String&, RenderStyle*, TextDirection,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, TextRunFlags = DefaultTextRunFlags);
+
+TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, RenderStyle*, TextDirection,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, unsigned offset, unsigned length, RenderStyle*, TextDirection,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, unsigned offset, RenderStyle*,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+TextRun constructTextRun(RenderObject* context, const Font&, const LChar* characters, int length, RenderStyle*, TextDirection,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+TextRun constructTextRun(RenderObject* context, const Font&, const UChar* characters, int length, RenderStyle*, TextDirection,
+    TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion);
+
+} // namespace WebCore
+
+#endif