Files.app: Let Files.app pass mutliple files to file handlers.

apps/launcher.h

Index: apps/launcher.h
diff --git a/apps/launcher.h b/apps/launcher.h
index d41f51780d23876d55147fd3eda1b123bc3aa136..c3035bf6ee59120aab25ba2aeaab955ab4dd5c50 100644
--- a/apps/launcher.h
+++ b/apps/launcher.h
@@ -6,6 +6,7 @@
 #define APPS_LAUNCHER_H_
 
 #include <string>
+#include <vector>
 
 class GURL;
 class Profile;
@@ -44,10 +45,11 @@ void LaunchPlatformApp(Profile* profile,
 // |file_path| available through the launch data. |handler_id| corresponds to
 // the id of the file_handlers item in the manifest that resulted in a match
 // that triggered this launch.
-void LaunchPlatformAppWithFileHandler(Profile* profile,
-                                      const extensions::Extension* extension,
-                                      const std::string& handler_id,
-                                      const base::FilePath& file_path);
+void LaunchPlatformAppWithFileHandler(
+    Profile* profile,
+    const extensions::Extension* extension,
+    const std::string& handler_id,
+    const std::vector<base::FilePath>& file_paths);
 
 // Launches the platform app |extension| with |handler_id|, |url| and
 // |referrer_url| available through the launch data. |handler_id| corresponds to