Make code compile with clang_use_chrome_plugin (part V)chromium/2770

This change mainly contains files in xfa/fxfa directory.
This is part of the efforts to make PDFium code compilable
by Clang chromium style plugins.

The changes are mainly the following:
-- move inline constructor/destructor of complex class/struct out-of-line;
-- add constructor/destructor of complex class/struct if not
 explicitly defined;
-- add explicit out-of-line copy constructor when needed;
-- move inline virtual functions out-of-line;
-- Properly mark virtual functions with 'override';
-- some minor cleanups;

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2071683002

1 files changed, 2 insertions, 0 deletions

diff --git a/xfa/fxfa/parser/xfa_layout_pagemgr_new.h b/xfa/fxfa/parser/xfa_layout_pagemgr_new.h
index a82c152df9..b992a228dd 100644
--- a/xfa/fxfa/parser/xfa_layout_pagemgr_new.h
+++ b/xfa/fxfa/parser/xfa_layout_pagemgr_new.h
@@ -22,10 +22,12 @@ class CXFA_ContainerRecord {
   CXFA_ContainerLayoutItem* pCurPageArea;
   CXFA_ContainerLayoutItem* pCurContentArea;
 };
+
 class CXFA_LayoutPageMgr {
  public:
   CXFA_LayoutPageMgr(CXFA_LayoutProcessor* pLayoutProcessor);
   ~CXFA_LayoutPageMgr();
+
   FX_BOOL InitLayoutPage(CXFA_Node* pFormNode);
   FX_BOOL PrepareFirstPage(CXFA_Node* pRootSubform);
   FX_FLOAT GetAvailHeight();