Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

ppapi/c/dev/ppp_printing_dev.h

Index: ppapi/c/dev/ppp_printing_dev.h
diff --git a/ppapi/c/dev/ppp_printing_dev.h b/ppapi/c/dev/ppp_printing_dev.h
index 336c588c3382553ec2569302e6981c7e859d05f8..910555b111daa63393a08ea32a62fb71e86d6abe 100644
--- a/ppapi/c/dev/ppp_printing_dev.h
+++ b/ppapi/c/dev/ppp_printing_dev.h
@@ -23,7 +23,8 @@ PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintOrientation_Dev, 4);
 typedef enum {
   PP_PRINTOUTPUTFORMAT_RASTER     = 1u << 0,
   PP_PRINTOUTPUTFORMAT_PDF        = 1u << 1,
-  PP_PRINTOUTPUTFORMAT_POSTSCRIPT = 1u << 2
+  PP_PRINTOUTPUTFORMAT_POSTSCRIPT = 1u << 2,
+  PP_PRINTOUTPUTFORMAT_EMF        = 1u << 3
 } PP_PrintOutputFormat_Dev;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintOutputFormat_Dev, 4);
 
@@ -48,8 +49,8 @@ struct PP_PrintPageNumberRange_Dev {
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintPageNumberRange_Dev, 8);
 
 /* Interface for the plugin to implement printing. */
-#define PPP_PRINTING_DEV_INTERFACE_0_4 "PPP_Printing(Dev);0.4"
-#define PPP_PRINTING_DEV_INTERFACE PPP_PRINTING_DEV_INTERFACE_0_4
+#define PPP_PRINTING_DEV_INTERFACE_0_5 "PPP_Printing(Dev);0.5"
+#define PPP_PRINTING_DEV_INTERFACE PPP_PRINTING_DEV_INTERFACE_0_5
 
 struct PPP_Printing_Dev {
   /**
@@ -61,6 +62,12 @@ struct PPP_Printing_Dev {
   uint32_t (*QuerySupportedFormats)(PP_Instance instance);
 
   /**
+   *  Returns true if the current content should be printed into the full page
+   *  and not scaled down to fit within the printer's printable area.
+   */
+  bool (*IsScalingDisabled)(PP_Instance instance);

[dmichael (off chromium), 2011/09/27 15:28:38]

We avoid using bool in C for various reasons (particularly, the C definition is
not necessarily compatible with C++ bool, which can lead to problems keeping a
consistent ABI). Please use PP_Bool.

Also...  we'll generally want to add functions on to the end instead of in the
middle. It makes the backwards-compatibility slightly easier in some cases.
(E.g., a plugin that wants to support 0.5 and 0.4 could safely return a 0.5
struct for either if the new function was on the end). Since this is still a Dev
interface though, it's fine to put it here if this seems like the most logical
place for it to go long term.

[vandebo (ex-Chrome), 2011/09/27 20:02:24]

Done.
 
Because there's an End method, I think anyone changing this is going to want to
add to the middle somewhere.  I've pulled my new method to the end because I
think you requested that in a later comment.

+
+  /**
    * Begins a print session with the given print settings. Calls to PrintPage
    * can only be made after a successful call to Begin. Returns the number of
    * pages required for the print output at the given page size (0 indicates