Export a function from the PDF plugin to get the dimensions of a PDF page.

pdf/pdf_engine.h

Index: pdf/pdf_engine.h
diff --git a/pdf/pdf_engine.h b/pdf/pdf_engine.h
index ee1cb1ff000341f1f0569dc1d617de11ee1260f5..24508a10cda413055d4d3315c1981d79c31b2bf0 100644
--- a/pdf/pdf_engine.h
+++ b/pdf/pdf_engine.h
@@ -308,10 +308,16 @@ class PDFEngineExports {
                                      int page_number,
                                      const RenderingSettings& settings,
                                      void* bitmap_buffer) = 0;
+
   virtual bool GetPDFDocInfo(const void* pdf_buffer,
                              int buffer_size,
                              int* page_count,
                              double* max_page_width) = 0;
+
+  // See the definition of GetPDFPageSizeByIndex in pdf.cc for details.

[Dan Beam, 2014/07/10 02:19:59]

btw, I didn't know ^ the rest of the file follows this pattern

+  virtual bool GetPDFPageSizeByIndex(const void* pdf_buffer,
+                                     int pdf_buffer_size, int page_number,
+                                     double* width, double* height) = 0;
 };
 
 }  // namespace chrome_pdf