From c39ef539f09743034dc689373bef924a796ad098 Mon Sep 17 00:00:00 2001
From: brave-builds <brave-builds+devops@brave.com>
Date: Wed, 8 Jan 2025 23:01:25 +0000
Subject: [PATCH] Uplift of #27150 (squashed) to beta

---
 browser/ui/views/frame/brave_browser_view_layout.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/browser/ui/views/frame/brave_browser_view_layout.cc b/browser/ui/views/frame/brave_browser_view_layout.cc
index b84cf4b1ca0b..db30e273c677 100644
--- a/browser/ui/views/frame/brave_browser_view_layout.cc
+++ b/browser/ui/views/frame/brave_browser_view_layout.cc
@@ -266,6 +266,13 @@ void BraveBrowserViewLayout::UpdateContentsContainerInsets(
   // Control contents's margin with sidebar & vertical tab state.
   gfx::Insets contents_margins = GetContentsMargins();
 
+  // Don't need to have additional contents margin for rounded corners
+  // in tab-initiated fullscreen. Web contents occupies whole screen.
+  if (IsFullscreenForTab()) {
+    contents_container_bounds.Inset(contents_margins);
+    return;
+  }
+
   // In rounded corners mode, we need to include a little margin so we have
   // somewhere to draw the shadow.
   int contents_margin_for_rounded_corners =