Rename DLLEXPORT AND STDCALL

This CL renames DLLEXPORT to FPDF_EXPORT and STDCALL to FPDF_CALLCONV to
be more PDFium specific.

This is split off of https://pdfium-review.googlesource.com/c/8970 by
Felix Kauselmann.

Bug: pdfium:825
Change-Id: I0aea9d43f1714b1e10e935c4a7eea685a5ad8998
Reviewed-on: https://pdfium-review.googlesource.com/10610
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/fpdfsdk/fpdfeditpage.cpp b/fpdfsdk/fpdfeditpage.cpp
index 91b966c..4890530 100644
--- a/fpdfsdk/fpdfeditpage.cpp
+++ b/fpdfsdk/fpdfeditpage.cpp
@@ -95,7 +95,7 @@
 
 }  // namespace
 
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_CreateNewDocument() {
+FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV FPDF_CreateNewDocument() {
   auto pDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
   pDoc->CreateNewDoc();
 
@@ -123,15 +123,16 @@
   return FPDFDocumentFromCPDFDocument(pDoc.release());
 }
 
-DLLEXPORT void STDCALL FPDFPage_Delete(FPDF_DOCUMENT document, int page_index) {
+FPDF_EXPORT void FPDF_CALLCONV FPDFPage_Delete(FPDF_DOCUMENT document,
+                                               int page_index) {
   if (UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document))
     pDoc->DeletePage(page_index);
 }
 
-DLLEXPORT FPDF_PAGE STDCALL FPDFPage_New(FPDF_DOCUMENT document,
-                                         int page_index,
-                                         double width,
-                                         double height) {
+FPDF_EXPORT FPDF_PAGE FPDF_CALLCONV FPDFPage_New(FPDF_DOCUMENT document,
+                                                 int page_index,
+                                                 double width,
+                                                 double height) {
   CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
   if (!pDoc)
     return nullptr;
@@ -161,13 +162,13 @@
 #endif  // PDF_ENABLE_XFA
 }
 
-DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page) {
+FPDF_EXPORT int FPDF_CALLCONV FPDFPage_GetRotation(FPDF_PAGE page) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   return IsPageObject(pPage) ? pPage->GetPageRotation() : -1;
 }
 
-DLLEXPORT void STDCALL FPDFPage_InsertObject(FPDF_PAGE page,
-                                             FPDF_PAGEOBJECT page_obj) {
+FPDF_EXPORT void FPDF_CALLCONV FPDFPage_InsertObject(FPDF_PAGE page,
+                                                     FPDF_PAGEOBJECT page_obj) {
   CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_obj);
   if (!pPageObj)
     return;
@@ -181,31 +182,31 @@
   CalcBoundingBox(pPageObj);
 }
 
-DLLEXPORT int STDCALL FPDFPage_CountObject(FPDF_PAGE page) {
+FPDF_EXPORT int FPDF_CALLCONV FPDFPage_CountObject(FPDF_PAGE page) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!IsPageObject(pPage))
     return -1;
   return pdfium::CollectionSize<int>(*pPage->GetPageObjectList());
 }
 
-DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFPage_GetObject(FPDF_PAGE page,
-                                                     int index) {
+FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPage_GetObject(FPDF_PAGE page,
+                                                             int index) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!IsPageObject(pPage))
     return nullptr;
   return pPage->GetPageObjectList()->GetPageObjectByIndex(index);
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFPage_HasTransparency(FPDF_PAGE page) {
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_HasTransparency(FPDF_PAGE page) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   return pPage && pPage->BackgroundAlphaNeeded();
 }
 
-DLLEXPORT void STDCALL FPDFPageObj_Destroy(FPDF_PAGEOBJECT page_obj) {
+FPDF_EXPORT void FPDF_CALLCONV FPDFPageObj_Destroy(FPDF_PAGEOBJECT page_obj) {
   delete CPDFPageObjectFromFPDFPageObject(page_obj);
 }
 
-DLLEXPORT FPDF_BOOL STDCALL
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
 FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT pageObject) {
   if (!pageObject)
     return false;
@@ -239,7 +240,7 @@
   return false;
 }
 
-DLLEXPORT int STDCALL FPDFPageObj_GetType(FPDF_PAGEOBJECT pageObject) {
+FPDF_EXPORT int FPDF_CALLCONV FPDFPageObj_GetType(FPDF_PAGEOBJECT pageObject) {
   if (!pageObject)
     return FPDF_PAGEOBJ_UNKNOWN;
 
@@ -247,7 +248,7 @@
   return pPageObj->GetType();
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GenerateContent(FPDF_PAGE page) {
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_GenerateContent(FPDF_PAGE page) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!IsPageObject(pPage))
     return false;
@@ -257,13 +258,14 @@
   return true;
 }
 
-DLLEXPORT void STDCALL FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
-                                             double a,
-                                             double b,
-                                             double c,
-                                             double d,
-                                             double e,
-                                             double f) {
+FPDF_EXPORT void FPDF_CALLCONV
+FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
+                      double a,
+                      double b,
+                      double c,
+                      double d,
+                      double e,
+                      double f) {
   CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object);
   if (!pPageObj)
     return;
@@ -272,8 +274,9 @@
   pPageObj->Transform(matrix);
 }
 
-DLLEXPORT void STDCALL FPDFPageObj_SetBlendMode(FPDF_PAGEOBJECT page_object,
-                                                FPDF_BYTESTRING blend_mode) {
+FPDF_EXPORT void FPDF_CALLCONV
+FPDFPageObj_SetBlendMode(FPDF_PAGEOBJECT page_object,
+                         FPDF_BYTESTRING blend_mode) {
   CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object);
   if (!pPageObj)
     return;
@@ -282,13 +285,13 @@
   pPageObj->SetDirty(true);
 }
 
-DLLEXPORT void STDCALL FPDFPage_TransformAnnots(FPDF_PAGE page,
-                                                double a,
-                                                double b,
-                                                double c,
-                                                double d,
-                                                double e,
-                                                double f) {
+FPDF_EXPORT void FPDF_CALLCONV FPDFPage_TransformAnnots(FPDF_PAGE page,
+                                                        double a,
+                                                        double b,
+                                                        double c,
+                                                        double d,
+                                                        double e,
+                                                        double f) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!pPage)
     return;
@@ -317,7 +320,8 @@
   }
 }
 
-DLLEXPORT void STDCALL FPDFPage_SetRotation(FPDF_PAGE page, int rotate) {
+FPDF_EXPORT void FPDF_CALLCONV FPDFPage_SetRotation(FPDF_PAGE page,
+                                                    int rotate) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!IsPageObject(pPage))
     return;
@@ -343,11 +347,12 @@
   return true;
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFPageObj_GetBounds(FPDF_PAGEOBJECT pageObject,
-                                                  float* left,
-                                                  float* bottom,
-                                                  float* right,
-                                                  float* top) {
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPageObj_GetBounds(FPDF_PAGEOBJECT pageObject,
+                      float* left,
+                      float* bottom,
+                      float* right,
+                      float* top) {
   if (!pageObject)
     return false;