WebShare: Move ShareError def to its own file

This CL moves the ShareError enum def to its own file so the macOS impl
(upcoming CLs) can import it in components//remote_cocoa without having
to import the other definitions

Bug: 1144920
Change-Id: I1f60916facdc34ce67aeb7ecec03e3795278d6f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626463Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Hassan Talat <hatalat@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#843451}

third_party/blink/public/mojom/BUILD.gn

@@ -659,6 +659,7 @@ mojom("android_mojo_bindings") {
     "payments/payment_handler_host.mojom",
     "payments/payment_request.mojom",
     "webauthn/authenticator.mojom",
+    "webshare/share_error.mojom",
     "webshare/webshare.mojom",
   ]
 

third_party/blink/public/mojom/webshare/share_error.mojom

+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[JavaPackage="org.chromium.webshare.mojom"]
+module blink.mojom;
+
+enum ShareError {
+  // Share successful.
+  OK,
+  // Something went wrong in the implementation.
+  INTERNAL_ERROR,
+  // Potentially dangerous files.
+  PERMISSION_DENIED,
+  // Share was canceled by user.
+  CANCELED,
+};

third_party/blink/public/mojom/webshare/webshare.mojom

@@ -6,19 +6,9 @@
 module blink.mojom;
 
 import "third_party/blink/public/mojom/blob/serialized_blob.mojom";
+import "third_party/blink/public/mojom/webshare/share_error.mojom";
 import "url/mojom/url.mojom";
 
-enum ShareError {
-  // Share successful.
-  OK,
-  // Something went wrong in the implementation.
-  INTERNAL_ERROR,
-  // Potentially dangerous files.
-  PERMISSION_DENIED,
-  // Share was canceled by user.
-  CANCELED,
-};
-
 struct SharedFile {
   string name;
   SerializedBlob blob;