Extensions WebUI: Autogenerate .grd file for optimized build

Leverage latest improvements to autogenerate WebUI .grd files for
optimized builds as well.

Bug: 1132403
Change-Id: Idb3a80ac6336521397b111902f375ae7bbcc83b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2465096
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816411}

chrome/browser/resources/BUILD.gn

@@ -548,13 +548,12 @@ if (enable_extensions) {
     grit_flags = [
       "-E",
       "root_gen_dir=" + rebase_path(root_gen_dir, root_build_dir),
+      "-E",
+      "root_src_dir=" + rebase_path("//", root_build_dir),
     ]
 
     defines = chrome_grit_defines
-    if (optimize_webui) {
-      source = "extensions/extensions_resources_vulcanized.grd"
-      deps = [ "//chrome/browser/resources/extensions:build" ]
-    } else {
+
     # These arguments are needed since the grd is generated at build time.
     enable_input_discovery_for_gn_analyze = false
     defines += [ "SHARED_INTERMEDIATE_DIR=" +
@@ -562,7 +561,6 @@ if (enable_extensions) {
     extensions_gen_dir = "$root_gen_dir/chrome/browser/resources/extensions"
     source = "$extensions_gen_dir/extensions_resources.grd"
     deps = [ "//chrome/browser/resources/extensions:build_grd" ]
-    }
 
     outputs = [
       "grit/extensions_resources.h",

chrome/browser/resources/extensions/BUILD.gn

@@ -14,11 +14,14 @@ preprocess_manifest = "preprocessed_manifest.json"
 preprocess_gen_manifest = "preprocessed_gen_manifest.json"
 
 if (optimize_webui) {
+  build_manifest = "build_manifest.json"
+
   optimize_webui("build") {
     host = "extensions"
     input = rebase_path("$target_gen_dir/$preprocess_folder", root_build_dir)
     js_out_files = [ "extensions.rollup.js" ]
     js_module_in_files = [ "extensions.js" ]
+    out_manifest = "$target_gen_dir/$build_manifest"
 
     deps = [
       ":preprocess",
@@ -27,8 +30,22 @@ if (optimize_webui) {
     ]
     excludes = [ "chrome://resources/js/cr.m.js" ]
   }
-} else {
-  generate_grd("build_grd") {
+}
+
+generate_grd("build_grd") {
+  grd_prefix = "extensions"
+  out_grd = "$target_gen_dir/${grd_prefix}_resources.grd"
+  input_files = [
+    "checkup_image_dark.svg",
+    "checkup_image.svg",
+    "extensions.html",
+  ]
+  input_files_base_dir = rebase_path(".", "//")
+
+  if (optimize_webui) {
+    deps = [ ":build" ]
+    manifest_files = [ "$target_gen_dir/$build_manifest" ]
+  } else {
     deps = [
       ":preprocess",
       ":preprocess_generated",
@@ -37,8 +54,6 @@ if (optimize_webui) {
       "$target_gen_dir/$preprocess_manifest",
       "$target_gen_dir/$preprocess_gen_manifest",
     ]
-    grd_prefix = "extensions"
-    out_grd = "$target_gen_dir/${grd_prefix}_resources.grd"
   }
 }
 
@@ -55,12 +70,6 @@ preprocess_grit("preprocess") {
     "navigation_helper.js",
     "service.js",
     "shortcut_util.js",
-
-    # TODO(dpapad): Pass these directly to the generate_grd() target above, once
-    # support for that is added, as part of crbug.com/1132403.
-    "extensions.html",
-    "checkup_image_dark.svg",
-    "checkup_image.svg",
   ]
 
   if (is_chromeos) {

chrome/browser/resources/extensions/extensions_resources_vulcanized.grd

-<?xml version="1.0" encoding="UTF-8"?>
-<grit latest_public_release="0" current_release="1" output_all_resource_defines="false">
-  <outputs>
-    <output filename="grit/extensions_resources.h" type="rc_header">
-      <emit emit_type='prepend'></emit>
-    </output>
-    <output filename="grit/extensions_resources_map.cc"
-            type="resource_map_source" />
-    <output filename="grit/extensions_resources_map.h"
-            type="resource_map_header" />
-    <output filename="extensions_resources.pak" type="data_package" />
-  </outputs>
-  <release seq="1">
-    <includes>
-      <include name="IDR_EXTENSIONS_EXTENSIONS_HTML"
-               file="extensions.html"
-               type="chrome_html" />
-      <include name="IDR_EXTENSIONS_EXTENSIONS_ROLLUP_JS"
-               file="${root_gen_dir}\chrome\browser\resources\extensions\extensions.rollup.js"
-               use_base_dir="false"
-               type="BINDATA" />
-      <include name="IDR_EXTENSIONS_CHECKUP_IMAGE"
-               file="checkup_image.svg"
-               type="BINDATA" />
-      <include name="IDR_EXTENSIONS_CHECKUP_IMAGE_DARK"
-               file="checkup_image_dark.svg"
-               type="BINDATA" />
-    </includes>
-  </release>
-</grit>

chrome/browser/ui/webui/extensions/extensions_ui.cc

@@ -67,18 +67,9 @@ content::WebUIDataSource* CreateMdExtensionsSource(Profile* profile,
                                                    bool in_dev_mode) {
   content::WebUIDataSource* source =
       content::WebUIDataSource::Create(chrome::kChromeUIExtensionsHost);
-#if BUILDFLAG(OPTIMIZE_WEBUI)
-  webui::SetupBundledWebUIDataSource(source, "extensions.js",
-                                     IDR_EXTENSIONS_EXTENSIONS_ROLLUP_JS,
-                                     IDR_EXTENSIONS_EXTENSIONS_HTML);
-  source->AddResourcePath("checkup_image.svg", IDR_EXTENSIONS_CHECKUP_IMAGE);
-  source->AddResourcePath("checkup_image_dark.svg",
-                          IDR_EXTENSIONS_CHECKUP_IMAGE_DARK);
-#else
   webui::SetupWebUIDataSource(
       source, base::make_span(kExtensionsResources, kExtensionsResourcesSize),
       "", IDR_EXTENSIONS_EXTENSIONS_HTML);
-#endif
 
   static constexpr webui::LocalizedString kLocalizedStrings[] = {
     // Add common strings.

tools/gritsettings/resource_ids.spec

@@ -134,9 +134,6 @@
     "includes": [1480],
     "structures": [1500],
   },
-  "chrome/browser/resources/extensions/extensions_resources_vulcanized.grd": {
-    "includes": [1520],
-  },
   "<(SHARED_INTERMEDIATE_DIR)/chrome/browser/resources/extensions/extensions_resources.grd": {
     "META": {"sizes": {"includes": [50],}},
     "includes": [1540],