Add keyboard shortcuts in Files.app to open inspector.

chrome/common/extensions/api/file_browser_private.idl

Index: chrome/common/extensions/api/file_browser_private.idl
diff --git a/chrome/common/extensions/api/file_browser_private.idl b/chrome/common/extensions/api/file_browser_private.idl
index cfe5c27e0098485ba014504f6ffcc0a7e717fdb4..8ab66ca7293ecce18809f869c4dd577da826e2b2 100644
--- a/chrome/common/extensions/api/file_browser_private.idl
+++ b/chrome/common/extensions/api/file_browser_private.idl
@@ -81,6 +81,9 @@ enum SearchType { EXCLUDE_DIRECTORIES, SHARED_WITH_ME, OFFLINE, ALL };
 // Zooming mode.
 enum ZoomOperationType { in, out, reset };
 
+// Specifies how to open inspector.
+enum InspectionType { normal, console, element, background };
+
 // Device event type.
 enum DeviceEventType {
   // Device is added.
@@ -761,6 +764,9 @@ interface Functions {
   // Moves the window to other user's desktop.
   static void visitDesktop(DOMString profileId,
                            optional SimpleCallback callback);
+
+  // Open inspector window.
+  static void openInspector(InspectionType type);
 };
 
 interface Events {