Adding resources for PDF loading progress control.

ppapi/c/private/ppb_pdf.h

Index: ppapi/c/private/ppb_pdf.h
===================================================================
--- ppapi/c/private/ppb_pdf.h	(revision 76768)
+++ ppapi/c/private/ppb_pdf.h	(working copy)
@@ -19,6 +19,7 @@
   PP_RESOURCESTRING_PDFGETPASSWORD = 0,
   PP_RESOURCESTRING_PDFLOADING = 1,
   PP_RESOURCESTRING_PDFLOAD_FAILED = 2,
+  PP_RESOURCESTRING_PDFPROGRESSLOADING = 3,
 } PP_ResourceString;
 
 typedef enum {
@@ -45,6 +46,16 @@
   PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8 = 20,
   PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9 = 21,
   PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND = 22,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0 = 23,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1 = 24,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2 = 25,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3 = 26,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4 = 27,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5 = 28,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6 = 29,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7 = 30,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8 = 31,
+  PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND = 32,
 } PP_ResourceImage;
 
 typedef enum {