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, 0 deletions

diff --git a/fpdfsdk/fsdk_actionhandler.cpp b/fpdfsdk/fsdk_actionhandler.cpp
index 38e5bfe00d..499bdcb2e3 100644
--- a/fpdfsdk/fsdk_actionhandler.cpp
+++ b/fpdfsdk/fsdk_actionhandler.cpp
@@ -18,6 +18,8 @@
 CPDFSDK_ActionHandler::CPDFSDK_ActionHandler()
     : m_pFormActionHandler(new CPDFSDK_FormActionHandler) {}
 
+CPDFSDK_ActionHandler::~CPDFSDK_ActionHandler() {}
+
 FX_BOOL CPDFSDK_ActionHandler::DoAction_DocOpen(const CPDF_Action& action,
                                                 CPDFSDK_Document* pDocument) {
   std::set<CPDF_Dictionary*> visited;