Fix ALL the include guards.

core/src/reflow/reflowedtextpage.h

Index: core/src/reflow/reflowedtextpage.h
diff --git a/core/src/reflow/reflowedtextpage.h b/core/src/reflow/reflowedtextpage.h
index 397428d178c442725e3781798a70261657cac491..92d38c71176736d2497d1b9f719f85fa6036f832 100644
--- a/core/src/reflow/reflowedtextpage.h
+++ b/core/src/reflow/reflowedtextpage.h
@@ -4,10 +4,12 @@
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#ifndef _REFLOWED_TEXT_PAGE_H
-#define _REFLOWED_TEXT_PAGE_H
+#ifndef REFLOWEDTEXTPAGE_H_
+#define REFLOWEDTEXTPAGE_H_
+
 #include "../../include/reflow/reflowengine.h"
 #include "../../src/reflow/reflowedpage.h"
+
 typedef CFX_SegmentedArray<CRF_CharData*> CRF_CharDataPtrArray;
 typedef CFX_SegmentedArray<FX_INT32> CFX_CountBSINT32Array;
 class CRF_TextPage : public IPDF_TextPage
@@ -68,4 +70,5 @@ private:
     CFX_RectArray			m_rectArray;
     CFX_CountBSINT32Array*	m_CountBSArray;
 };
-#endif
+
+#endif  // REFLOWEDTEXTPAGE_H_