UpdateToolbarButtonState simplified to receive a summary

Chromium change:
https://chromium.googlesource.com/chromium/src/+/e1a48ccd6d3ea6fb6bd8a9d82cecd4cad1b3a202

commit e1a48ccd6d3ea6fb6bd8a9d82cecd4cad1b3a202
Author: Lily Chen <[email protected]>
Date:   Fri Apr 21 20:11:47 2023 +0000

    [DownloadBubble] Compute info relevant to button state in update service

    This moves the computation of the AllDownloadUIModelsInfo from the
    per-window DownloadDisplayController to the per-profile
    DownloadBubbleUpdateService. This avoids redundant fetching of models
    from the update service, which is expensive and potentially causes jank
    while downloading files, since the models are not needed (just the info
    about them) in order to update the button state.

    Bug: 1434670

chromium_src/chrome/browser/download/bubble/download_display_controller.cc

@@ -12,10 +12,10 @@
 #undef DownloadDisplayController
 
 void DownloadDisplayController::UpdateToolbarButtonState(
-    std::vector<std::unique_ptr<DownloadUIModel>>& all_models) {
-  DownloadDisplayControllerChromium::UpdateToolbarButtonState(all_models);
+    const AllDownloadUIModelsInfo& info) {
+  DownloadDisplayControllerChromium::UpdateToolbarButtonState(info);
 
-  if (all_models.empty()) {
+  if (info.all_models_size == 0) {
     return;
   }
 
@@ -26,10 +26,7 @@ void DownloadDisplayController::UpdateToolbarButtonState(
   // Show toolbar if there's at least one in-progress download item.
   // Upstream doesn't show toolbar button when only dangerous files are
   // in-progress.
-  for (const auto& model : all_models) {
-    if (model->GetState() == download::DownloadItem::IN_PROGRESS) {
-      ShowToolbarButton();
-      return;
-    }
+  if (info.in_progress_count || info.has_deep_scanning) {
+    ShowToolbarButton();
   }
 }

chromium_src/chrome/browser/download/bubble/download_display_controller.h

@@ -28,8 +28,7 @@ class DownloadDisplayController : public DownloadDisplayControllerChromium {
   using DownloadDisplayControllerChromium::DownloadDisplayControllerChromium;
 
  private:
-  void UpdateToolbarButtonState(
-      std::vector<std::unique_ptr<DownloadUIModel>>& all_models) override;
+  void UpdateToolbarButtonState(const AllDownloadUIModelsInfo& info) override;
 };
 
 #endif  // BRAVE_CHROMIUM_SRC_CHROME_BROWSER_DOWNLOAD_BUBBLE_DOWNLOAD_DISPLAY_CONTROLLER_H_