Changes to master to more closely match XFA.

These files should change in master in order to reduce the number of
"noise diffs" between master and XFA as seen in
    https://codereview.chromium.org/1399273003/

This includes: whitespace, matching header ordering, and implementing
a GetPageFromFPDFPage() from XFA.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1407583004 .
diff --git a/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp b/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
index 69ff932..ce0a67f 100644
--- a/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
+++ b/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
@@ -509,23 +509,15 @@
 }
 
 FX_BOOL CFFL_IFormFiller::IsFillingAllowed(CPDFSDK_Widget* pWidget) {
-  ASSERT(pWidget != NULL);
-
   if (pWidget->GetFieldType() == FIELDTYPE_PUSHBUTTON)
     return TRUE;
-  else {
-    CPDF_Page* pPage = pWidget->GetPDFPage();
-    ASSERT(pPage != NULL);
 
-    CPDF_Document* pDocument = pPage->m_pDocument;
-    ASSERT(pDocument != NULL);
-
-    FX_DWORD dwPermissions = pDocument->GetUserPermissions();
-    return (dwPermissions & FPDFPERM_FILL_FORM) ||
-           (dwPermissions & FPDFPERM_ANNOT_FORM) ||
-           (dwPermissions & FPDFPERM_MODIFY);
-  }
-  return TRUE;
+  CPDF_Page* pPage = pWidget->GetPDFPage();
+  CPDF_Document* pDocument = pPage->m_pDocument;
+  FX_DWORD dwPermissions = pDocument->GetUserPermissions();
+  return (dwPermissions & FPDFPERM_FILL_FORM) ||
+         (dwPermissions & FPDFPERM_ANNOT_FORM) ||
+         (dwPermissions & FPDFPERM_MODIFY);
 }
 
 CFFL_FormFiller* CFFL_IFormFiller::GetFormFiller(CPDFSDK_Annot* pAnnot,
@@ -802,13 +794,10 @@
 
 FX_BOOL CFFL_IFormFiller::IsValidAnnot(CPDFSDK_PageView* pPageView,
                                        CPDFSDK_Annot* pAnnot) {
-  ASSERT(pPageView != NULL);
-  ASSERT(pAnnot != NULL);
-
   if (pPageView)
     return pPageView->IsValidAnnot(pAnnot->GetPDFAnnot());
-  else
-    return FALSE;
+
+  return FALSE;
 }
 
 void CFFL_IFormFiller::OnBeforeKeyStroke(FX_BOOL bEditOrList,
diff --git a/fpdfsdk/src/fpdf_transformpage.cpp b/fpdfsdk/src/fpdf_transformpage.cpp
index 614c7a4..d0dee59 100644
--- a/fpdfsdk/src/fpdf_transformpage.cpp
+++ b/fpdfsdk/src/fpdf_transformpage.cpp
@@ -9,6 +9,10 @@
 
 namespace {
 
+CPDF_Page* GetPageFromFPDFPage(FPDF_PAGE page) {
+  return static_cast<CPDF_Page*>(page);
+}
+
 void SetBoundingBox(CPDF_Page* page,
                     const CFX_ByteStringC& key,
                     float left,
@@ -49,11 +53,11 @@
                                             float bottom,
                                             float right,
                                             float top) {
-  if (!page)
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  if (!pPage)
     return;
 
-  SetBoundingBox(static_cast<CPDF_Page*>(page), "MediaBox", left, bottom, right,
-                 top);
+  SetBoundingBox(pPage, "MediaBox", left, bottom, right, top);
 }
 
 DLLEXPORT void STDCALL FPDFPage_SetCropBox(FPDF_PAGE page,
@@ -61,11 +65,11 @@
                                            float bottom,
                                            float right,
                                            float top) {
-  if (!page)
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  if (!pPage)
     return;
 
-  SetBoundingBox(static_cast<CPDF_Page*>(page), "CropBox", left, bottom, right,
-                 top);
+  SetBoundingBox(pPage, "CropBox", left, bottom, right, top);
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetMediaBox(FPDF_PAGE page,
@@ -73,8 +77,8 @@
                                                  float* bottom,
                                                  float* right,
                                                  float* top) {
-  return page && GetBoundingBox(static_cast<CPDF_Page*>(page), "MediaBox", left,
-                                bottom, right, top);
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  return pPage && GetBoundingBox(pPage, "MediaBox", left, bottom, right, top);
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetCropBox(FPDF_PAGE page,
@@ -82,14 +86,15 @@
                                                 float* bottom,
                                                 float* right,
                                                 float* top) {
-  return page && GetBoundingBox(static_cast<CPDF_Page*>(page), "CropBox", left,
-                                bottom, right, top);
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  return pPage && GetBoundingBox(pPage, "CropBox", left, bottom, right, top);
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page,
                                                        FS_MATRIX* matrix,
                                                        FS_RECTF* clipRect) {
-  if (!page)
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  if (!pPage)
     return FALSE;
 
   CFX_ByteTextBuf textBuf;
@@ -107,7 +112,6 @@
                  matrix->d, matrix->e, matrix->f);
   textBuf << bsMatix;
 
-  CPDF_Page* pPage = (CPDF_Page*)page;
   CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
   CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
   if (!pContentObj)
@@ -263,9 +267,10 @@
 
 DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
                                                FPDF_CLIPPATH clipPath) {
-  if (!page)
+  CPDF_Page* pPage = GetPageFromFPDFPage(page);
+  if (!pPage)
     return;
-  CPDF_Page* pPage = (CPDF_Page*)page;
+
   CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
   CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
   if (!pContentObj)
diff --git a/fpdfsdk/src/fpdfdoc.cpp b/fpdfsdk/src/fpdfdoc.cpp
index 97f5cf3..4e2e7f3 100644
--- a/fpdfsdk/src/fpdfdoc.cpp
+++ b/fpdfsdk/src/fpdfdoc.cpp
@@ -4,8 +4,8 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "../include/fsdk_define.h"
 #include "../../public/fpdf_doc.h"
+#include "../include/fsdk_define.h"
 
 namespace {
 
diff --git a/fpdfsdk/src/fpdfeditimg.cpp b/fpdfsdk/src/fpdfeditimg.cpp
index 3b5272c..bb71078 100644
--- a/fpdfsdk/src/fpdfeditimg.cpp
+++ b/fpdfsdk/src/fpdfeditimg.cpp
@@ -22,7 +22,7 @@
                           int nCount,
                           FPDF_PAGEOBJECT image_object,
                           FPDF_FILEACCESS* fileAccess) {
-  if (!image_object || !fileAccess)
+  if (!image_object || !fileAccess || !pages)
     return FALSE;
 
   IFX_FileRead* pFile = new CPDF_CustomAccess(fileAccess);
@@ -61,7 +61,7 @@
                                                    int nCount,
                                                    FPDF_PAGEOBJECT image_object,
                                                    FPDF_BITMAP bitmap) {
-  if (!image_object || !bitmap)
+  if (!image_object || !bitmap || !pages)
     return FALSE;
   CFX_DIBitmap* pBmp = NULL;
   pBmp = (CFX_DIBitmap*)bitmap;
diff --git a/fpdfsdk/src/fpdfeditpage.cpp b/fpdfsdk/src/fpdfeditpage.cpp
index 0219c9c..8796d0e 100644
--- a/fpdfsdk/src/fpdfeditpage.cpp
+++ b/fpdfsdk/src/fpdfeditpage.cpp
@@ -5,6 +5,7 @@
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../public/fpdf_edit.h"
+#include "../../public/fpdf_formfill.h"
 #include "../include/fsdk_define.h"
 
 #if _FX_OS_ == _FX_ANDROID_
@@ -274,6 +275,7 @@
   CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_object;
   if (pPageObj == NULL)
     return;
+
   CFX_AffineMatrix matrix((FX_FLOAT)a, (FX_FLOAT)b, (FX_FLOAT)c, (FX_FLOAT)d,
                           (FX_FLOAT)e, (FX_FLOAT)f);
   pPageObj->Transform(matrix);
diff --git a/fpdfsdk/src/fpdfformfill.cpp b/fpdfsdk/src/fpdfformfill.cpp
index 272e781..cca4834 100644
--- a/fpdfsdk/src/fpdfformfill.cpp
+++ b/fpdfsdk/src/fpdfformfill.cpp
@@ -322,14 +322,8 @@
   CPDFSDK_PageView* pPageView = pSDKDoc->GetPageView(pPage, FALSE);
   if (pPageView) {
     CPDFDoc_Environment* pEnv = pSDKDoc->GetEnv();
-    ASSERT(pEnv != NULL);
-
     CPDFSDK_ActionHandler* pActionHandler = pEnv->GetActionHander();
-    ASSERT(pActionHandler != NULL);
-
     CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-    ASSERT(pPageDict != NULL);
-
     CPDF_AAction aa = pPageDict->GetDict(FX_BSTRC("AA"));
 
     FX_BOOL bExistOAAction = FALSE;
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
index b050e03..dfa91d1 100644
--- a/fpdfsdk/src/fpdfview.cpp
+++ b/fpdfsdk/src/fpdfview.cpp
@@ -121,6 +121,7 @@
 #endif
   CPDF_ModuleMgr::Destroy();
   CFX_GEModule::Destroy();
+
   delete g_pCodecModule;
   g_pCodecModule = nullptr;
 }
diff --git a/fpdfsdk/src/fsdk_mgr.cpp b/fpdfsdk/src/fsdk_mgr.cpp
index 33e56de..b7962d5 100644
--- a/fpdfsdk/src/fsdk_mgr.cpp
+++ b/fpdfsdk/src/fsdk_mgr.cpp
@@ -223,6 +223,7 @@
 
   delete m_pAnnotHandlerMgr;
   m_pAnnotHandlerMgr = NULL;
+
   delete m_pActionHandler;
   m_pActionHandler = NULL;
 }