Change CXFA_FFWidget::RenderWidget() to take a const CFX_Matrix&.

Change some related code to take a const CFX_Matrix* since it is not
immediately obvious if the matrix can be made into a const-ref.

Change-Id: I15c840222b575cc479b1f6f0b6d3b3c0e50d5515
Reviewed-on: https://pdfium-review.googlesource.com/11113
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/xfa/fxfa/cxfa_ffpushbutton.cpp b/xfa/fxfa/cxfa_ffpushbutton.cpp
index b6ba0f56b1..45d4e71b3f 100644
--- a/xfa/fxfa/cxfa_ffpushbutton.cpp
+++ b/xfa/fxfa/cxfa_ffpushbutton.cpp
@@ -29,16 +29,15 @@ CXFA_FFPushButton::~CXFA_FFPushButton() {
 }
 
 void CXFA_FFPushButton::RenderWidget(CXFA_Graphics* pGS,
-                                     CFX_Matrix* pMatrix,
+                                     const CFX_Matrix& matrix,
                                      uint32_t dwStatus) {
   if (!IsMatchVisibleStatus(dwStatus))
     return;
 
   CFX_Matrix mtRotate = GetRotateMatrix();
-  if (pMatrix)
-    mtRotate.Concat(*pMatrix);
+  mtRotate.Concat(matrix);
 
-  CXFA_FFWidget::RenderWidget(pGS, &mtRotate, dwStatus);
+  CXFA_FFWidget::RenderWidget(pGS, mtRotate, dwStatus);
   RenderHighlightCaption(pGS, &mtRotate);
 
   CFX_RectF rtWidget = GetRectWithoutRotate();