feat: Adjust transparency level

Author: sameerasw

patches/helium/macos/vibrancy.patch

@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/ui/views/frame/browser_frame_view_mac.mm b/chrome/browser/ui/views/frame/browser_frame_view_mac.mm
-index 380a3c51c2ae0..1165d144ffb96 100644
+index 380a3c51c2ae0..e71e2c53a6a6f 100644
 --- a/chrome/browser/ui/views/frame/browser_frame_view_mac.mm
 +++ b/chrome/browser/ui/views/frame/browser_frame_view_mac.mm
 @@ -429,8 +429,19 @@ void BrowserFrameViewMac::OnPaint(gfx::Canvas* canvas) {
@@ -10,7 +10,7 @@ index 380a3c51c2ae0..1165d144ffb96 100644
 +
    SkColor frame_color = GetFrameColor(BrowserFrameActiveState::kUseCurrent);
 -  canvas->DrawColor(frame_color);
-+  SkColor transparent_tint = SkColorSetA(frame_color, 128);
++  SkColor transparent_tint = SkColorSetA(frame_color, 38);
 +
 +  gfx::Rect contents_bounds = GetBrowserView()->contents_container()->bounds();
 +  contents_bounds =