WebUI: Replace vulcanize with polymer-bundler

chrome/browser/resources/vulcanize.gni

Index: chrome/browser/resources/vulcanize.gni
diff --git a/chrome/browser/resources/vulcanize.gni b/chrome/browser/resources/vulcanize.gni
index 69db5294cc8fa73b74f5f1ad3bb0a197ffcf512c..5555d35f7127d4fe7c82f9528dbdd91b9597e930 100644
--- a/chrome/browser/resources/vulcanize.gni
+++ b/chrome/browser/resources/vulcanize.gni
@@ -34,12 +34,16 @@ template("vulcanize") {
     ]
 
     # This depfile is generated by vulcanize_gn.py
-    depfile = "${target_gen_dir}/${invoker.html_out_file}.d"
+    depfile = "${target_gen_dir}/${target_name}.d"
+
+    outputs = []
+    foreach(_out, invoker.html_out_files) {
+      outputs += [ "$target_gen_dir/$_out" ]
+    }
+    foreach(_out, invoker.js_out_files) {
+      outputs += [ "$target_gen_dir/$_out" ]
+    }
 
-    outputs = [
-      "$target_gen_dir/${invoker.html_out_file}",
-      "$target_gen_dir/${invoker.js_out_file}",
-    ]
     deps = invoker.deps
 
     # Note that we have to manually pass the sources to our script if the
@@ -47,12 +51,6 @@ template("vulcanize") {
     args = [
       "--host",
       invoker.host,
-      "--html_in_file",
-      invoker.html_in_file,
-      "--html_out_file",
-      invoker.html_out_file,
-      "--js_out_file",
-      invoker.js_out_file,
       "--input",
       invoker.input,
       "--out_folder",
@@ -61,6 +59,10 @@ template("vulcanize") {
       rebase_path(depfile, root_build_dir),
     ]
 
+    args += [ "--html_in_files" ] + invoker.html_in_files
+    args += [ "--html_out_files" ] + invoker.html_out_files
+    args += [ "--js_out_files" ] + invoker.js_out_files
+
     if (defined(invoker.excludes)) {
       args += [ "--exclude" ] + invoker.excludes
     }