1 files changed, 24 insertions, 2 deletions
diff --git a/chromium/chrome/services/cups_proxy/public/mojom/proxy.mojom b/chromium/chrome/services/cups_proxy/public/mojom/proxy.mojom
index 24129b6b802..7561c85f86c 100644
--- a/chromium/chrome/services/cups_proxy/public/mojom/proxy.mojom
+++ b/chromium/chrome/services/cups_proxy/public/mojom/proxy.mojom
@@ -5,6 +5,28 @@
 // NOTE: This mojom should be kept in sync with the copy in Chromium OS's repo
 // in TODO(crbug.com/945409): Update this with CrOS side mojom copy.
 
-module chromeos.printing.mojom;
+module cups_proxy.mojom;
 
-// TODO(crbug.com/945409): Add proxy method.
+struct HttpHeader {
+  string key;
+  string value;
+};
+
+// Implemented by the CupsProxyService; this service runs in the browser process
+// and supports serving CUPS printing requests from VMs on ChromeOS (currently
+// just PluginVM).
+interface CupsProxier {
+  // Expects, and strictly enforces, that |request| be a well-formatted IPP
+  // printing request. If so, the service integrates with the Chrome printing
+  // stack to correctly proxy it to the CUPS daemon, returning the resulting
+  // IPP response. Invalid IPP requests will generate an appropriate error IPP
+  // response.
+  //
+  // Note: This service expects only one request at a time; any further
+  // concurrent requests will fail with an empty IPP response, i.e. empty
+  // returned headers and ipp_message.
+  ProxyRequest@0(string method, string url, string version,
+                 array<HttpHeader> headers, array<uint8> body) =>
+                 (array<HttpHeader> headers, array<uint8> ipp_message,
+                 [MinVersion=1] int32 http_status_code);
+};