Tab Search: Propagate UseRipples platform setting to WebUI

Bug: 1128599
Change-Id: Ibbf2b73ab4da67ce5cfc6130bbef860b0ee21132
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2459126Reviewed-by: Thomas Lukaszewicz <tluk@chromium.org>
Commit-Queue: Roman Arora <romanarora@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815430}

chrome/browser/ui/webui/tab_search/tab_search_ui.cc

@@ -18,6 +18,7 @@
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "ui/base/webui/web_ui_util.h"
+#include "ui/views/style/platform_style.h"
 
 #if BUILDFLAG(ENABLE_TAB_SEARCH)
 #include "chrome/grit/tab_search_resources.h"
@@ -57,6 +58,7 @@ TabSearchUI::TabSearchUI(content::WebUI* web_ui)
   source->AddBoolean(
       "submitFeedbackEnabled",
       base::FeatureList::IsEnabled(features::kTabSearchFeedback));
+  source->AddBoolean("useRipples", views::PlatformStyle::kUseRipples);
 
   // Add the configuration parameters for fuzzy search.
   source->AddBoolean("searchIgnoreLocation",