Make code compile with clang_use_chrome_plugin (part IV)

This change mainly contains files in fpdfsdk/ 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 plus removing an unused file and splitting
cxfa_eventparam out from fxfa.h

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2062313002

1 files changed, 2 insertions, 3 deletions

diff --git a/fpdfsdk/fpdfxfa/include/fpdfxfa_page.h b/fpdfsdk/fpdfxfa/include/fpdfxfa_page.h
index 2e08f580ed..7b60c669cc 100644
--- a/fpdfsdk/fpdfxfa/include/fpdfxfa_page.h
+++ b/fpdfsdk/fpdfxfa/include/fpdfxfa_page.h
@@ -9,12 +9,11 @@
 
 #include <memory>
 
-#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
-#include "core/fpdfapi/include/cpdf_modulemgr.h"
-#include "core/fxcrt/include/fx_coordinates.h"
 #include "core/fxcrt/include/fx_system.h"
 
+class CFX_Matrix;
 class CPDFXFA_Document;
+class CPDF_Dictionary;
 class CPDF_Page;
 class CXFA_FFPageView;