Bug 1786055 - Migrate styleeditor DTD localization to Fluent. r=nchevobbe,fluent-reviewers,flod

After the preceding change, the editMenuOverlay strings are only used by the styleeditor.
Therefore it makes sense to migrate them here specifically to its localization file.

Differential Revision: https://phabricator.services.mozilla.com/D155449

devtools/client/locales/en-US/styleeditor.ftl

@@ -27,6 +27,12 @@ styleeditor-open-link-new-tab =
     .label = Open Link in New Tab
 styleeditor-copy-url =
     .label = Copy URL
+styleeditor-find =
+    .label = Find
+    .accesskey = F
+styleeditor-find-again =
+    .label = Find Again
+    .accesskey = g
 styleeditor-go-to-line =
     .label = Jump to Line…
     .accesskey = J

devtools/client/styleeditor/index.xhtml

@@ -2,10 +2,7 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<!DOCTYPE window [
-<!ENTITY % editMenuStrings SYSTEM "chrome://global/locale/editMenuOverlay.dtd">
- %editMenuStrings;
-]>
+<!DOCTYPE window>
 
 <?xml-stylesheet href="chrome://global/skin/global.css" type="text/css"?>
 <?xml-stylesheet href="chrome://devtools/content/shared/widgets/widgets.css" type="text/css"?>
@@ -61,9 +58,9 @@
                 data-l10n-id="text-action-select-all" command="cmd_selectAll"/>
       <menuseparator/>
       <menuitem id="se-menu-find"
-        label="&findCmd.label;" accesskey="&findCmd.accesskey;" command="cmd_find"/>
-      <menuitem id="cMenu_findAgain" label="&findAgainCmd.label;"
-                accesskey="&findAgainCmd.accesskey;" command="cmd_findAgain"/>
+                data-l10n-id="styleeditor-find" command="cmd_find"/>
+      <menuitem id="cMenu_findAgain"
+                data-l10n-id="styleeditor-find-again" command="cmd_findAgain"/>
       <menuseparator/>
       <menuitem id="se-menu-gotoLine"
           data-l10n-id="styleeditor-go-to-line"

python/l10n/fluent_migrations/bug_1786055_migration.py

@@ -0,0 +1,30 @@
+# coding=utf8
+
+# Any copyright is dedicated to the Public Domain.
+# http://creativecommons.org/publicdomain/zero/1.0/
+
+from __future__ import absolute_import
+import fluent.syntax.ast as FTL
+from fluent.migrate.helpers import transforms_from
+from fluent.migrate.helpers import COPY
+
+
+def migrate(ctx):
+    """Bug 1786055 - Migrate styleeditor from DTD to Fluent, part {index}"""
+
+    ctx.add_transforms(
+        "devtools/client/styleeditor.ftl",
+        "devtools/client/styleeditor.ftl",
+        transforms_from(
+            """
+
+styleeditor-find =
+    .label = { COPY(path1, "findCmd.label") }
+    .accesskey = { COPY(path1, "findCmd.accesskey") }
+styleeditor-find-again =
+    .label = { COPY(path1, "findAgainCmd.label") }
+    .accesskey = { COPY(path1, "findAgainCmd.accesskey") }
+""",
+            path1="toolkit/chrome/global/editMenuOverlay.dtd",
+        ),
+    )

toolkit/locales/en-US/chrome/global/editMenuOverlay.dtd

@@ -1,11 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<!ENTITY findCmd.label             "Find">
-<!ENTITY findCmd.key               "F">
-<!ENTITY findCmd.accesskey         "F">
-<!ENTITY findAgainCmd.label        "Find Again">
-<!ENTITY findAgainCmd.key          "G">
-<!ENTITY findAgainCmd.key2         "VK_F3">
-<!ENTITY findAgainCmd.accesskey    "g">

toolkit/locales/jar.mn

@@ -16,9 +16,6 @@
   locale/@AB_CD@/global/browser.properties              (%chrome/global/browser.properties)
   locale/@AB_CD@/global/commonDialogs.properties        (%chrome/global/commonDialogs.properties)
   locale/@AB_CD@/global/contentAreaCommands.properties  (%chrome/global/contentAreaCommands.properties)
-#ifndef MOZ_FENNEC
-  locale/@AB_CD@/global/editMenuOverlay.dtd             (%chrome/global/editMenuOverlay.dtd)
-#endif
   locale/@AB_CD@/global/extensions.properties           (%chrome/global/extensions.properties)
   locale/@AB_CD@/global/fallbackMenubar.properties      (%chrome/global/fallbackMenubar.properties)
   locale/@AB_CD@/global/filepicker.properties           (%chrome/global/filepicker.properties)