Change the private image data shared memory handle code to return a native...

ppapi/c/trusted/ppb_image_data_trusted.h

Index: ppapi/c/trusted/ppb_image_data_trusted.h
===================================================================
--- ppapi/c/trusted/ppb_image_data_trusted.h	(revision 65406)
+++ ppapi/c/trusted/ppb_image_data_trusted.h	(working copy)
@@ -8,14 +8,17 @@
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_resource.h"
 
-#define PPB_IMAGEDATA_TRUSTED_INTERFACE "PPB_ImageDataTrusted;0.1"
+#define PPB_IMAGEDATA_TRUSTED_INTERFACE "PPB_ImageDataTrusted;0.2"
 
 struct PPB_ImageDataTrusted {
   /**
    * Returns the internal shared memory pointer associated with the given
    * ImageData resource. Used for proxying. Returns the handle or 0 on failure.
+   * On success, the size in bytes of the shared memory region will be placed
+   * into |*byte_count|.
    */
-  uint64_t (*GetNativeMemoryHandle)(PP_Resource image_data);
+  uint64_t (*GetNativeMemoryHandle)(PP_Resource image_data,
+                                    uint32_t* byte_count);
 };
 
 #endif  // PPAPI_C_TRUSTED_PPB_IMAGE_DATA_TRUSTED_H_