Convert TransformPoint calls to Transform calls

This Cl converts remaining calls to TransformPoint to use Transform instead.

Change-Id: I7a2c000492da5dda3975b4449812f281816fdab6
Reviewed-on: https://pdfium-review.googlesource.com/2822
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index 57d5d4d..e1fba8d 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -855,12 +855,11 @@
   CFX_Matrix device2page;
   device2page.SetReverse(page2device);
 
-  FX_FLOAT page_x_f = static_cast<FX_FLOAT>(device_x);
-  FX_FLOAT page_y_f = static_cast<FX_FLOAT>(device_y);
-  device2page.TransformPoint(page_x_f, page_y_f);
+  CFX_PointF pos = device2page.Transform(CFX_PointF(
+      static_cast<FX_FLOAT>(device_x), static_cast<FX_FLOAT>(device_y)));
 
-  *page_x = page_x_f;
-  *page_y = page_y_f;
+  *page_x = pos.x;
+  *page_y = pos.y;
 #endif  // PDF_ENABLE_XFA
 }
 
@@ -885,12 +884,11 @@
 #else   // PDF_ENABLE_XFA
   CFX_Matrix page2device =
       pPage->GetDisplayMatrix(start_x, start_y, size_x, size_y, rotate);
-  FX_FLOAT device_x_f = static_cast<FX_FLOAT>(page_x);
-  FX_FLOAT device_y_f = static_cast<FX_FLOAT>(page_y);
-  page2device.TransformPoint(device_x_f, device_y_f);
+  CFX_PointF pos = page2device.Transform(
+      CFX_PointF(static_cast<FX_FLOAT>(page_x), static_cast<FX_FLOAT>(page_y)));
 
-  *device_x = FXSYS_round(device_x_f);
-  *device_y = FXSYS_round(device_y_f);
+  *device_x = FXSYS_round(pos.x);
+  *device_y = FXSYS_round(pos.y);
 #endif  // PDF_ENABLE_XFA
 }