WebUI: Post Polymer2 removal cleanups.

 - Move remaining (still used) Bash/Python scripts from v1_0/ to v3_0/
 - Delete now unused tools/polymer/generate_gn.py
 - Delete unnecessary 'polymer_version' parameter from generate_gn.sh
 - Update README.chromium
 - Delete ui/webui/resources/html/polymer.html,
   ui/webui/resources/js/polymer_config.js and remove from the binary.

Bug: 965770
Change-Id: Ib56d1ed2b9b97e36c8476fe3a6accbd8d96b3ed7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3866451
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1041394}

third_party/polymer/README.chromium

@@ -1,16 +1,16 @@
 Name: Polymer
 Short Name: polymer
-URL: http://www.polymer-project.org
-Version: 1.9.1
-Revision: (see v1_0/components_summary.txt)
+URL: https://polymer-library.polymer-project.org
+Version: 3.2.0
+Revision: N/A
 License: BSD
 License File: LICENSE.polymer
 Security Critical: no
 
 Description:
 This directory contains a copy of the Polymer framework and some elements from
 the Polymer elements catalog (https://elements.polymer-project.org/). See
-v1_0/components_summary.txt for a full list of components.
+v3_0/package.json for a full list of components.
 
 The source git repositories can be found at:
 https://github.com/Polymer/polymer
@@ -26,37 +26,25 @@ becomes smaller and better over time.
 technologies called the Polymer.
 
 Local Modifications:
-- Applied modifications that can be found in v1_0/chromium.patch.
+- Applied modifications that can be found in v3_0/chromium.patch.
 - All inline JavaScript blocks are extracted from Polymer HTML elements to
 external JS files. This version of the Polymer is used in a web UI, where CSP
 forbids an execution of inline scripts. The extraction was made with the help of
 the Crisper tool (https://github.com/PolymerLabs/crisper).
 - Removed executable bit from some files.
 - Resolved encoding issues.
 - Replaced CRLF line endings with LF line endings in text files.
-- Removed files that are not needed by Chromium, see v1_0/rsync_exclude.txt.
+- Removed files that are not needed by Chromium, see v3_0/rsync_exclude.txt.
 - Re-implemented <paper-ripple> using Web Animations API (which, as of
   2/21/2017 does not work in Safari or IE). This is a complete fork from
   Polymer's <paper-ripple>.
 - Removed CSS properties that are not needed in Chromium using
   css_strip_prefixes.py script.
-- Bundled and minified Polymer 2 with minify_polymer.py, since Polymer 2 repo
-  does not distribute minified files (unlike Polymer 1).
-- Note that the Polymer 2 bundle does not include dir-mixin.html which is
+- Bundled and minified Polymer 3 with minify_polymer.py, since Polymer 3 repo
+  does not distribute minified files.
+- Note that the Polymer 3 bundle does not include dir-mixin.js which is
   responsible for polyfylling :dir() CSS rules, because it causes a performance
   regression (and it is unnecessary), see crbug.com/899603 for more context.
 
 To restore a content of the 'components-chromium' directory from scratch, run
-./v1_0/reproduce.sh on a Linux machine.
-
-Note on Bower:
-The directory can be updated by running "bower update". A new component can be
-installed by running "bower install -S PolymerElements/<component>#version".
-Be sure to add the .bower.json file to the repository as it includes the
-revision information of the polymer component.
-Also be sure that you listed all the added packages in bower.json.
-
-Polymer 3 notes
-Polymer 3 resides under v3_0/, and uses NPM instead of Bower. To restore the
-contents of the 'components-chromium' directory from scratch, run
 ./v3_0/reproduce.sh on a Linux machine.

third_party/polymer/v1_0/generate_gn.sh → third_party/polymer/v3_0/generate_gn.sh

@@ -6,26 +6,13 @@
 dirs=$(find components-chromium -type d | grep -v 'components-chromium/polymer')
 
 gn_files=''
-polymer_version=$1
-
-if [ "$polymer_version" -eq 3 ];
-  then
-    file_extension="js";
-  else
-    file_extension="html";
-fi
 
 for dir in $dirs; do
-  files=$(\ls $dir/*.$file_extension 2>/dev/null)
+  files=$(\ls $dir/*.js 2>/dev/null)
   if [ "$files" ]; then
     echo "Analyzing $dir"
     gn_file="$dir/BUILD.gn"
-    if [ "$polymer_version" -eq 3 ];
-      then
-        content=$(../../../tools/polymer/generate_gn_v3.py $files);
-      else
-        content=$(../../../tools/polymer/generate_gn.py $files);
-    fi
+    content=$(../../../tools/polymer/generate_gn_v3.py $files);
     if [ "$content" ]; then
       echo "Writing $gn_file"
       echo "$content" > "$gn_file"
@@ -40,10 +27,6 @@ done
 
 # Copy components-chromium/polymer BUILD.gn file manually, since it is not
 # auto-generated by generate_gn_v3.py.
-if [ "$polymer_version" -eq 3 ];
-  then
-    cp ./BUILD_polymer.gn "components-chromium/polymer/BUILD.gn"
-fi
-
+cp ./BUILD_polymer.gn "components-chromium/polymer/BUILD.gn"
 
 git cl format $gn_files

third_party/polymer/v3_0/reproduce.sh

@@ -108,13 +108,13 @@ if [[ ! -z "${new}${deleted}" ]]; then
 fi
 
 echo 'Stripping unnecessary prefixed CSS rules...'
-python ../v1_0/css_strip_prefixes.py --file_extension=js
+python css_strip_prefixes.py --file_extension=js
 
 echo 'Generating -rgb versions of --google-* vars in paper-style/colors.js...'
-python ../v1_0/rgbify_hex_vars.py --filter-prefix=google --replace \
+python rgbify_hex_vars.py --filter-prefix=google --replace \
     components-chromium/paper-styles/color.js
 
 # TODO create components summary
 
 echo 'Creating GN files for interfaces and externs...'
-../v1_0/generate_gn.sh 3 # polymer_version=3
+./generate_gn.sh

ui/webui/resources/html/BUILD.gn

@@ -5,8 +5,6 @@
 import("//build/config/chromeos/ui_mode.gni")
 import("//ui/webui/resources/tools/generate_grd.gni")
 
-include_polymer = !is_android && !is_ios
-
 generate_grd("build_grdp") {
   grd_prefix = "webui_html"
   out_grd = "$target_gen_dir/resources.grdp"
@@ -36,15 +34,11 @@ generate_grd("build_grdp") {
     ]
   }
 
-  if (include_polymer) {
-    input_files += [ "polymer.html" ]
-
-    if (is_chromeos_ash) {
-      input_files += [
-        "i18n_behavior.html",
-        "web_ui_listener_behavior.html",
-      ]
-    }
+  if (is_chromeos_ash) {
+    input_files += [
+      "i18n_behavior.html",
+      "web_ui_listener_behavior.html",
+    ]
   }
   input_files_base_dir = rebase_path(".", "//")
 }

ui/webui/resources/js/BUILD.gn

@@ -100,7 +100,6 @@ preprocess_if_expr("preprocess_src") {
       "i18n_template_no_process.js",
       "list_property_update_behavior.js",
       "parse_html_subset.js",
-      "polymer_config.js",
       "promise_resolver.js",
       "web_ui_listener_behavior.js",
     ]