Refactor the Java AppBannerManager to be owned by native code.

chrome/browser/ui/tab_helpers.cc

Index: chrome/browser/ui/tab_helpers.cc
diff --git a/chrome/browser/ui/tab_helpers.cc b/chrome/browser/ui/tab_helpers.cc
index 2981c676900ba05bc351b550f60950b1ea2eb1a6..82dc39cfdfbec46374c9e89742407df16577cc3e 100644
--- a/chrome/browser/ui/tab_helpers.cc
+++ b/chrome/browser/ui/tab_helpers.cc
@@ -53,6 +53,7 @@
 #include "content/public/browser/web_contents.h"
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
+#include "chrome/browser/android/banners/app_banner_manager_android.h"
 #include "chrome/browser/android/data_usage/data_use_tab_helper.h"
 #include "chrome/browser/android/offline_pages/offline_page_tab_helper.h"
 #include "chrome/browser/android/offline_pages/recent_tab_helper.h"
@@ -182,6 +183,7 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   // --- Platform-specific tab helpers ---
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
+  banners::AppBannerManagerAndroid::CreateForWebContents(web_contents);
   ContextMenuHelper::CreateForWebContents(web_contents);
   DataUseTabHelper::CreateForWebContents(web_contents);
 
@@ -212,9 +214,8 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   ThumbnailTabHelper::CreateForWebContents(web_contents);
   web_modal::WebContentsModalDialogManager::CreateForWebContents(web_contents);
 
-  if (banners::AppBannerManagerDesktop::IsEnabled()) {
+  if (banners::AppBannerManagerDesktop::IsEnabled())
     banners::AppBannerManagerDesktop::CreateForWebContents(web_contents);
-  }
 #endif
 
   // --- Feature tab helpers behind flags ---