Convert CFWL messages to use CFX_PointF

This Cl updates the various CFWL_Message classes to take CFX_PointF instead of
x,y values.

Change-Id: I5d9d01d68be64fc9e69c04574994c01286ad24e1
Reviewed-on: https://pdfium-review.googlesource.com/2811
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/fpdfdoc.cpp b/fpdfsdk/fpdfdoc.cpp
index 82b898a..f7d94c2 100644
--- a/fpdfsdk/fpdfdoc.cpp
+++ b/fpdfsdk/fpdfdoc.cpp
@@ -257,7 +257,10 @@
   if (!pLinkList)
     return nullptr;
 
-  return pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y, nullptr)
+  return pLinkList
+      ->GetLinkAtPoint(
+          pPage, CFX_PointF(static_cast<FX_FLOAT>(x), static_cast<FX_FLOAT>(y)),
+          nullptr)
       .GetDict();
 }
 
@@ -273,7 +276,9 @@
     return -1;
 
   int z_order = -1;
-  pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y, &z_order);
+  pLinkList->GetLinkAtPoint(
+      pPage, CFX_PointF(static_cast<FX_FLOAT>(x), static_cast<FX_FLOAT>(y)),
+      &z_order);
   return z_order;
 }