[sources] Switch debugger actions to GM3 icons.

This updates the debugger actions to use the GM3 icons (also switching
the AnimationTimeline as drive-by since that's using the pause and
resume icons as well). It does not switch the disable breakpoints icon
yet, since that is also changing how it's displayed generally.

Screenshot: https://imgur.com/eTuiUn7.png
Bug: chromium:1427397
Change-Id: I454b9a37e5c0d2893171eaee4b3d4eb22d46dbdb
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/4379751
Commit-Queue: Benedikt Meurer <[email protected]>
Commit-Queue: Kateryna Prokopenko <[email protected]>
Reviewed-by: Kateryna Prokopenko <[email protected]>
Auto-Submit: Benedikt Meurer <[email protected]>
diff --git a/front_end/ui/legacy/ActionRegistration.ts b/front_end/ui/legacy/ActionRegistration.ts
index 763b15b..1ff124e 100644
--- a/front_end/ui/legacy/ActionRegistration.ts
+++ b/front_end/ui/legacy/ActionRegistration.ts
@@ -232,14 +232,14 @@
   LARGEICON_PHONE = 'devices',
   LARGEICON_PLAY = 'largeicon-play',
   LARGEICON_DOWNLOAD = 'largeicon-download',
-  LARGEICON_PAUSE = 'largeicon-pause',
-  LARGEICON_RESUME = 'largeicon-resume',
+  LARGEICON_PAUSE = 'pause',
+  LARGEICON_RESUME = 'resume',
   LARGEICON_TRASH_BIN = 'largeicon-trash-bin',
   LARGEICON_SETTINGS_GEAR = 'gear',
-  LARGEICON_STEP_OVER = 'largeicon-step-over',
-  LARGE_ICON_STEP_INTO = 'largeicon-step-into',
-  LARGE_ICON_STEP = 'largeicon-step',
-  LARGE_ICON_STEP_OUT = 'largeicon-step-out',
+  LARGEICON_STEP_OVER = 'step-over',
+  LARGE_ICON_STEP_INTO = 'step-into',
+  LARGE_ICON_STEP = 'step',
+  LARGE_ICON_STEP_OUT = 'step-out',
   LARGE_ICON_DEACTIVATE_BREAKPOINTS = 'largeicon-deactivate-breakpoints',
   LARGE_ICON_ADD = 'largeicon-add',
 }