PPAPI: Add an API for setting a custom user agent for URL requests.

ppapi/c/ppb_url_request_info.h

Index: ppapi/c/ppb_url_request_info.h
diff --git a/ppapi/c/ppb_url_request_info.h b/ppapi/c/ppb_url_request_info.h
index fceda5ca0a720dadd47bb9bc0696a4e81112946a..92dca0a8f5fb8c6bed96b99f67a9e7d430c499d3 100644
--- a/ppapi/c/ppb_url_request_info.h
+++ b/ppapi/c/ppb_url_request_info.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppb_url_request_info.idl modified Mon Nov 14 10:36:01 2011. */
+/* From ppb_url_request_info.idl modified Mon Jul  9 17:37:37 2012. */
 
 #ifndef PPAPI_C_PPB_URL_REQUEST_INFO_H_
 #define PPAPI_C_PPB_URL_REQUEST_INFO_H_
@@ -145,7 +145,18 @@ typedef enum {
    * <code>PP_URLREQUESTPROPERTY_PREFETCHBUFFERUPPERTHRESHOLD</code> must also
    * be set. Behavior is undefined if the former is >= the latter.
    */
-  PP_URLREQUESTPROPERTY_PREFETCHBUFFERLOWERTHRESHOLD = 12
+  PP_URLREQUESTPROPERTY_PREFETCHBUFFERLOWERTHRESHOLD = 12,
+  /**
+   * This corresponds to a string (<code>PP_VARTYPE_STRING</code>) or may be
+   * undefined (<code>PP_VARTYPE_UNDEFINED</code>; default).
+   * Set it to a string to set a custom user-agent header (if empty, that header
+   * will be omitted), or to undefined to use the default
+   * (if any). Only loaders with universal access (only available on trusted
+   * implementations) will accept <code>URLRequestInfo</code> objects that try
+   * to set a custom content transfer encoding; if given to a loader without
+   * universal access, <code>PP_ERROR_NOACCESS</code> will result.
+   */
+  PP_URLREQUESTPROPERTY_CUSTOMUSERAGENT = 13
 } PP_URLRequestProperty;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_URLRequestProperty, 4);
 /**