Make code compile with clang_use_chrome_plugin (part VI)

xfa/fwl/core/cfwl_themepart.h

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_CORE_CFWL_THEMEPART_H_
 #define XFA_FWL_CORE_CFWL_THEMEPART_H_
 
 #include "core/fxcrt/include/fx_coordinates.h"
@@ skipping 63 matching lines @@
   CFWL_PartState_ReadOnly = 1 << 11,
   CFWL_PartState_LSelected = 1 << 12,
   CFWL_PartState_RSelected = 1 << 13,
   CFWL_PartState_Selected = 1 << 14
 };
 
 class IFWL_Widget;
 
 class CFWL_ThemePart {
  public:
-  CFWL_ThemePart()
-      : m_pWidget(nullptr),
-        m_iPart(CFWL_Part::None),
-        m_dwStates(CFWL_PartState_Normal),
-        m_bMaximize(false),
-        m_bStaticBackground(false),
-        m_pData(nullptr) {
-    m_rtPart.Reset();
-    m_matrix.SetIdentity();
-  }
+  CFWL_ThemePart();
 
   CFX_Matrix m_matrix;
   CFX_RectF m_rtPart;
   IFWL_Widget* m_pWidget;
   CFWL_Part m_iPart;
   uint32_t m_dwStates;
   bool m_bMaximize;
   bool m_bStaticBackground;
   void* m_pData;
 };
 
+inline CFWL_ThemePart::CFWL_ThemePart()
+    : m_pWidget(nullptr),
+      m_iPart(CFWL_Part::None),
+      m_dwStates(CFWL_PartState_Normal),
+      m_bMaximize(false),
+      m_bStaticBackground(false),
+      m_pData(nullptr) {
+  m_rtPart.Reset();
+  m_matrix.SetIdentity();
+}
+
 #endif  // XFA_FWL_CORE_CFWL_THEMEPART_H_