Change trusted shared memory interface to match audio....

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 67614)
+++ ppapi/c/trusted/ppb_image_data_trusted.h	(working copy)
@@ -8,17 +8,19 @@
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_resource.h"
 
-#define PPB_IMAGEDATA_TRUSTED_INTERFACE "PPB_ImageDataTrusted;0.2"
+#define PPB_IMAGEDATA_TRUSTED_INTERFACE "PPB_ImageDataTrusted;0.3"
 
 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|.
+   * ImageData resource. Used for proxying. Returns PP_OK on success, or
+   * PP_ERROR_* on failure.  On success, the size in bytes of the shared
+   * memory region will be placed into |*byte_count|, and the handle for
+   * the shared memory in |*handle|.
    */
-  uint64_t (*GetNativeMemoryHandle)(PP_Resource image_data,
-                                    uint32_t* byte_count);
+  int32_t (*GetSharedMemory)(PP_Resource image_data,
+                             int* handle,
+                             uint32_t* byte_count);
 };
 
 #endif  // PPAPI_C_TRUSTED_PPB_IMAGE_DATA_TRUSTED_H_