Compile unproblematic core directories with -Wshadow

No problems detected in these directories, so just enable it there.
Separate CLs are filed for directories that need fixing.

Bug: 294205
Change-Id: I0632b59a91ddc27f9be342d5141a34c08a624c0e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2460900
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816027}

third_party/blink/renderer/core/accessibility/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("accessibility") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "ax_context.cc",
     "ax_context.h",

third_party/blink/renderer/core/animation_frame/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("animation_frame") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "worker_animation_frame_provider.cc",
     "worker_animation_frame_provider.h",

third_party/blink/renderer/core/aom/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("aom") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "accessible_node.cc",
     "accessible_node.h",

third_party/blink/renderer/core/clipboard/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("clipboard") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "clipboard_mime_types.cc",
     "clipboard_mime_types.h",

third_party/blink/renderer/core/content_capture/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("content_capture") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "content_capture_manager.cc",
     "content_capture_manager.h",

third_party/blink/renderer/core/context_features/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("context_features") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "context_feature_settings.cc",
     "context_feature_settings.h",

third_party/blink/renderer/core/display_lock/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("display_lock") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "display_lock_context.cc",
     "display_lock_context.h",

third_party/blink/renderer/core/events/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("events") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "after_print_event.h",
     "animation_event.cc",

third_party/blink/renderer/core/execution_context/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("execution_context") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "agent.cc",
     "agent.h",

third_party/blink/renderer/core/feature_policy/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("feature_policy") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "document_policy_parser.cc",
     "document_policy_parser.h",

third_party/blink/renderer/core/fileapi/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("fileapi") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "blob.cc",
     "blob.h",

third_party/blink/renderer/core/frame/BUILD.gn

@@ -6,6 +6,8 @@ import("//printing/buildflags/buildflags.gni")
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("frame") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "ad_tracker.cc",
     "ad_tracker.h",

third_party/blink/renderer/core/fullscreen/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("fullscreen") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "document_fullscreen.cc",
     "document_fullscreen.h",

third_party/blink/renderer/core/geometry/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("geometry") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "dom_matrix.cc",
     "dom_matrix.h",

third_party/blink/renderer/core/html/parser/BUILD.gn

@@ -6,6 +6,8 @@ import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("parser") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "atomic_html_token.cc",
     "atomic_html_token.h",

third_party/blink/renderer/core/imagebitmap/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("imagebitmap") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "image_bitmap.cc",
     "image_bitmap.h",

third_party/blink/renderer/core/intersection_observer/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("intersection_observer") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "element_intersection_observer_data.cc",
     "element_intersection_observer_data.h",

third_party/blink/renderer/core/messaging/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("messaging") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "blink_cloneable_message.cc",
     "blink_cloneable_message.h",

third_party/blink/renderer/core/mojo/BUILD.gn

@@ -6,6 +6,8 @@ import("//mojo/public/tools/bindings/mojom.gni")
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("mojo") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "mojo.cc",
     "mojo.h",

third_party/blink/renderer/core/offscreencanvas/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("offscreencanvas") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "offscreen_canvas.cc",
     "offscreen_canvas.h",

third_party/blink/renderer/core/origin_trials/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("origin_trials") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "navigation_origin_trial_features.cc",
     "origin_trial_context.cc",

third_party/blink/renderer/core/page/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("page") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "autoscroll_controller.cc",
     "autoscroll_controller.h",

third_party/blink/renderer/core/probe/BUILD.gn

@@ -36,6 +36,8 @@ source_set("generated") {
 
 # Compiles the sources generated above.
 blink_core_sources("probe") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "async_task_id.h",
     "core_probes.cc",

third_party/blink/renderer/core/resize_observer/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("resize_observer") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "resize_observation.cc",
     "resize_observation.h",

third_party/blink/renderer/core/script/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("script") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "classic_pending_script.cc",
     "classic_pending_script.h",

third_party/blink/renderer/core/scroll/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("scroll") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "ns_scroller_imp_details.h",
     "programmatic_scroll_animator.cc",

third_party/blink/renderer/core/streams/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("streams") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "byte_length_queuing_strategy.cc",
     "byte_length_queuing_strategy.h",

third_party/blink/renderer/core/style/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("rendering") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   visibility = [ "//third_party/blink/renderer/core/*" ]
 
   sources = [
@@ -102,6 +104,8 @@ blink_core_sources("rendering") {
 }
 
 blink_core_sources("svg_style") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "svg_computed_style.cc",
     "svg_computed_style.h",

third_party/blink/renderer/core/svg/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("svg") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "animation/element_smil_animations.cc",
     "animation/element_smil_animations.h",

third_party/blink/renderer/core/timezone/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("timezone") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "timezone_controller.cc",
     "timezone_controller.h",

third_party/blink/renderer/core/timing/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("timing") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "dom_window_performance.cc",
     "dom_window_performance.h",

third_party/blink/renderer/core/trustedtypes/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("trustedtypes") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "trusted_html.cc",
     "trusted_html.h",

third_party/blink/renderer/core/typed_arrays/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("typed_arrays") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "array_buffer/array_buffer_contents.cc",
     "array_buffer/array_buffer_contents.h",

third_party/blink/renderer/core/url/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("url") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "dom_url.cc",
     "dom_url.h",

third_party/blink/renderer/core/workers/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("workers") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "abstract_worker.cc",
     "abstract_worker.h",

third_party/blink/renderer/core/xml/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("xml") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "document_xml_tree_viewer.cc",
     "document_xml_tree_viewer.h",

third_party/blink/renderer/core/xmlhttprequest/BUILD.gn

@@ -5,6 +5,8 @@
 import("//third_party/blink/renderer/core/core.gni")
 
 blink_core_sources("xmlhttprequest") {
+  configs += [ "//build/config/compiler:noshadowing" ]
+
   sources = [
     "xml_http_request.cc",
     "xml_http_request.h",