Rename printing::ClipBox to PdfRectangle.

pdf/pdfium/pdfium_engine.cc

Index: pdf/pdfium/pdfium_engine.cc
diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc
index 3899e0ee51eb3bf5278470fc2645cdee3e0e4752..97506ef9e46268f482ef891a3e379050f26b0d10 100644
--- a/pdf/pdfium/pdfium_engine.cc
+++ b/pdf/pdfium/pdfium_engine.cc
@@ -3185,8 +3185,8 @@ void PDFiumEngine::TransformPDFPageForPrinting(
           gfx_content_rect, src_page_width, src_page_height, rotated) : 1.0;
 
   // Calculate positions for the clip box.
-  printing::ClipBox media_box;
-  printing::ClipBox crop_box;
+  printing::PdfRectangle media_box;
+  printing::PdfRectangle crop_box;
   bool has_media_box = !!FPDFPage_GetMediaBox(page,
                                               &media_box.left,
                                               &media_box.bottom,
@@ -3199,9 +3199,9 @@ void PDFiumEngine::TransformPDFPageForPrinting(
                                             &crop_box.top);
   printing::CalculateMediaBoxAndCropBox(
       rotated, has_media_box, has_crop_box, &media_box, &crop_box);
-  printing::ClipBox source_clip_box =
+  printing::PdfRectangle source_clip_box =
       printing::CalculateClipBoxBoundary(media_box, crop_box);
-  printing::ScaleClipBox(scale_factor, &source_clip_box);
+  printing::ScalePdfRectangle(scale_factor, &source_clip_box);
 
   // Calculate the translation offset values.
   double offset_x = 0;