Add command descriptions (microsoft#209950)

Author: lramos15

src/vs/workbench/contrib/files/browser/fileActions.ts

@@ -620,7 +620,10 @@ export class FocusFilesExplorer extends Action2 {
 			id: FocusFilesExplorer.ID,
 			title: FocusFilesExplorer.LABEL,
 			f1: true,
-			category: Categories.File
+			category: Categories.File,
+			metadata: {
+				description: nls.localize2('focusFilesExplorerMetadata', "Moves focus to the file explorer view container.")
+			}
 		});
 	}
 
@@ -640,7 +643,10 @@ export class ShowActiveFileInExplorer extends Action2 {
 			id: ShowActiveFileInExplorer.ID,
 			title: ShowActiveFileInExplorer.LABEL,
 			f1: true,
-			category: Categories.File
+			category: Categories.File,
+			metadata: {
+				description: nls.localize2('showInExplorerMetadata', "Reveals and selects the active file within the explorer view.")
+			}
 		});
 	}
 
@@ -666,7 +672,10 @@ export class OpenActiveFileInEmptyWorkspace extends Action2 {
 			title: OpenActiveFileInEmptyWorkspace.LABEL,
 			f1: true,
 			category: Categories.File,
-			precondition: EmptyWorkspaceSupportContext
+			precondition: EmptyWorkspaceSupportContext,
+			metadata: {
+				description: nls.localize2('openFileInEmptyWorkspaceMetadata', "Opens the active file in a new window with no folders open.")
+			}
 		});
 	}
 

src/vs/workbench/contrib/files/browser/views/explorerView.ts

@@ -1031,6 +1031,9 @@ registerAction2(class extends Action2 {
 				group: 'navigation',
 				when: ContextKeyExpr.equals('view', VIEW_ID),
 				order: 30
+			},
+			metadata: {
+				description: nls.localize2('refreshExplorerMetadata', "Forces a refresh of the Explorer.")
 			}
 		});
 	}
@@ -1055,6 +1058,9 @@ registerAction2(class extends Action2 {
 				group: 'navigation',
 				when: ContextKeyExpr.equals('view', VIEW_ID),
 				order: 40
+			},
+			metadata: {
+				description: nls.localize2('collapseExplorerFoldersMetadata', "Folds all folders in the Explorer.")
 			}
 		});
 	}

src/vs/workbench/contrib/welcomeWalkthrough/browser/editor/editorWalkThrough.ts

@@ -36,7 +36,10 @@ export class EditorWalkThroughAction extends Action2 {
 			id: EditorWalkThroughAction.ID,
 			title: EditorWalkThroughAction.LABEL,
 			category: Categories.Help,
-			f1: true
+			f1: true,
+			metadata: {
+				description: localize2('editorWalkThroughMetadata', "Opens an interactive playground for learning about the editor.")
+			}
 		});
 	}