Implementation of URLLoader using PluginResource/ResourceHost.

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index b5e04de4a03d4edac23120e44a108e553f0d8856..560e5e32fdb3355fc88408ed183bf04d812dbaae 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -562,10 +562,10 @@ IPC_MESSAGE_ROUTED3(PpapiMsg_PPPInstance_DidChangeView,
 IPC_MESSAGE_ROUTED2(PpapiMsg_PPPInstance_DidChangeFocus,
                     PP_Instance /* instance */,
                     PP_Bool /* has_focus */)
-IPC_SYNC_MESSAGE_ROUTED2_1(PpapiMsg_PPPInstance_HandleDocumentLoad,
-                           PP_Instance /* instance */,
-                           ppapi::HostResource /* url_loader */,
-                           PP_Bool /* result */)
+IPC_MESSAGE_ROUTED3(PpapiMsg_PPPInstance_HandleDocumentLoad,
+                    PP_Instance /* instance */,
+                    int /* pending_loader_host_id */,
+                    ppapi::URLResponseInfoData /* response */)
 
 // PPP_Messaging.
 IPC_MESSAGE_ROUTED2(PpapiMsg_PPPMessaging_HandleMessage,
@@ -1505,7 +1505,63 @@ IPC_MESSAGE_CONTROL0(PpapiHostMsg_Printing_GetDefaultPrintSettings)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_Printing_GetDefaultPrintSettingsReply,
                      PP_PrintSettings_Dev /* print_settings */)
 
+// URLLoader ------------------------------------------------------------------
+
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_URLLoader_Create)
+
+// These messages correspond to PPAPI calls and all should get a
+// CallbackComplete message.
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_URLLoader_Open,
+                     ppapi::URLRequestInfoData /* request_data */)
+
+// The plugin can tell the host to defer a load to hold off on sending more
+// data because the buffer in the plugin is full. When defers_loading is set to
+// false, data streaming will resume.
+//
+// When auditing redirects (no auto follow) the load will be automatically
+// deferred each time we get a redirect. The plugin will reset this to false
+// by sending this message when it wants to continue following the redirect.
+//
+// When streaming data, the host may still send more data after this call (for
+// example, it could already be in-flight at the time of this request).
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_URLLoader_SetDeferLoading,
+                     bool /* defers_loading */)
+
+// Closes the URLLoader. There is no reply.
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_URLLoader_Close)
+
+// Requests that cross-site restrictions be ignored. The plugin must have
+// the private permission set. Otherwise this message will be ignored by the
+// renderer. There is no reply.
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_URLLoader_GrantUniversalAccess)
+
+// Push notification that a response is available.
+IPC_MESSAGE_CONTROL1(PpapiPluginMsg_URLLoader_ReceivedResponse,
+                     ppapi::URLResponseInfoData /* response */)
+
+// Push notification with load data from the renderer. It is a custom generated
+// message with the response data (array of bytes stored via WriteData)
+// appended.
+IPC_MESSAGE_CONTROL0(PpapiPluginMsg_URLLoader_SendData)
+
+// Push notification indicating that all data has been sent, either via
+// SendData or by streaming it to a file. Note that since this is a push
+// notification, we don't use the result field of the ResourceMessageReply.
+IPC_MESSAGE_CONTROL1(PpapiPluginMsg_URLLoader_FinishedLoading,
+                     int32_t /* result */)
+
+// Push notification from the renderer to the plugin to tell it about download
+// and upload progress. This will only be sent if the plugin has requested
+// progress updates, and only the fields requested by the plugin will be
+// valid.
+IPC_MESSAGE_CONTROL4(PpapiPluginMsg_URLLoader_UpdateProgress,
+                     int64_t /* bytes_sent */,
+                     int64_t /* total_bytes_to_be_sent */,
+                     int64_t /* bytes_received */,
+                     int64_t /* total_bytes_to_be_received */)
+
 // WebSocket ------------------------------------------------------------------
+
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_WebSocket_Create)
 
 // Establishes the connection to a server. This message requires