Share the replace project confirmation string between new and upload

src/components/menu-bar/menu-bar.jsx

@@ -67,13 +67,8 @@ import languageIcon from '../language-selector/language-icon.svg';
 
 import scratchLogo from './scratch-logo.svg';
 
-const messages = defineMessages({
-    confirmNav: {
-        id: 'gui.menuBar.confirmNewWithoutSaving',
-        defaultMessage: 'Replace contents of the current project?',
-        description: 'message for prompting user to confirm that they want to create new project without saving'
-    }
-});
+import sharedMessages from '../../lib/shared-messages';
+
 const ariaMessages = defineMessages({
     language: {
         id: 'gui.menuBar.LanguageSelector',
@@ -173,7 +168,7 @@ class MenuBar extends React.Component {
         // they'll lose their work.
         if (this.props.projectChanged && !this.props.canCreateNew) {
             readyToReplaceProject = confirm( // eslint-disable-line no-alert
-                this.props.intl.formatMessage(messages.confirmNav)
+                this.props.intl.formatMessage(sharedMessages.replaceProjectWarning)
             );
         }
         this.props.onRequestCloseFile();

src/containers/sb-file-uploader.jsx

@@ -6,6 +6,8 @@ import {defineMessages, injectIntl, intlShape} from 'react-intl';
 
 import analytics from '../lib/analytics';
 import log from '../lib/log';
+import sharedMessages from '../lib/shared-messages';
+
 import {
     LoadingStates,
     getIsLoadingUpload,
@@ -43,11 +45,6 @@ const messages = defineMessages({
         id: 'gui.projectLoader.loadError',
         defaultMessage: 'The project file that was selected failed to load.',
         description: 'An error that displays when a local project file fails to load.'
-    },
-    uploadWarning: {
-        id: 'gui.projectLoader.uploadWarning',
-        defaultMessage: 'Replace the contents of the current project?',
-        description: 'A warning before uploading a file on top of another project.'
     }
 });
 
@@ -109,7 +106,7 @@ class SBFileUploader extends React.Component {
             // has changed and is not showing with ID. If it has an ID, this operation
             // does not currently overwrite that project, so it is safe to do without confirmation.
             const uploadAllowed = (isShowingWithoutId && projectChanged) ?
-                confirm(intl.formatMessage(messages.uploadWarning)) : // eslint-disable-line no-alert
+                confirm(intl.formatMessage(sharedMessages.replaceProjectWarning)) : // eslint-disable-line no-alert
                 true;
 
             if (uploadAllowed) this.props.requestProjectUpload(loadingState);

src/lib/shared-messages.js

@@ -20,5 +20,10 @@ export default defineMessages({
         defaultMessage: 'pop',
         description: 'Name of the pop sound, the default sound added to a sprite',
         id: 'gui.sharedMessages.pop'
+    },
+    replaceProjectWarning: {
+        id: 'gui.sharedMessages.replaceProjectWarning',
+        defaultMessage: 'Replace contents of the current project?',
+        description: 'Confirmation that user wants to overwrite the current project contents'
     }
 });