For no margins, or printable area margins, don't factor in the header/footer size.

printing/page_setup.h

Index: printing/page_setup.h
diff --git a/printing/page_setup.h b/printing/page_setup.h
index ef1552d0e73e1f2188a84f3b3721e4173d6a8d21..91734753acaacda210fd2ee5a248a0ad6b4d3f4b 100644
--- a/printing/page_setup.h
+++ b/printing/page_setup.h
@@ -65,8 +65,8 @@ class PRINTING_EXPORT PageSetup {
 
  private:
   // Calculate overlay_area_, effective_margins_, and content_area_, based on
-  // a constraint of |bounds|.
-  void CalculateSizesWithinRect(const gfx::Rect& bounds);
+  // a constraint of |bounds| and |text_height|.
+  void CalculateSizesWithinRect(const gfx::Rect& bounds, int text_height);
 
   // Physical size of the page, including non-printable margins.
   gfx::Size physical_size_;