Fix BrowserFrameWin artifact on opaque to glass frame changes.

chrome/browser/ui/views/frame/browser_frame_win.cc

Index: chrome/browser/ui/views/frame/browser_frame_win.cc
diff --git a/chrome/browser/ui/views/frame/browser_frame_win.cc b/chrome/browser/ui/views/frame/browser_frame_win.cc
index ee3a0b723b515b61b1da7618888f674c9c59364a..be2f95001b9295123ec0726ad50c439869d9f4fa 100644
--- a/chrome/browser/ui/views/frame/browser_frame_win.cc
+++ b/chrome/browser/ui/views/frame/browser_frame_win.cc
@@ -177,10 +177,9 @@ bool BrowserFrameWin::GetClientAreaInsets(gfx::Insets* insets) const {
 }
 
 void BrowserFrameWin::HandleFrameChanged() {
-  // We need to update the glass region on or off before the base class adjusts
-  // the window region.
-  UpdateDWMFrame();
+  // Handle window frame layout changes, then set the updated glass region.
   NativeWidgetWin::HandleFrameChanged();
+  UpdateDWMFrame();
 }
 
 bool BrowserFrameWin::PreHandleMSG(UINT message,
@@ -455,7 +454,7 @@ void BrowserFrameWin::UpdateDWMFrame() {
     }
     // In maximized mode, we only have a titlebar strip of glass, no side/bottom
     // borders.
-    if (!browser_view_->IsFullscreen()) {
+    if (!IsFullscreen()) {
       gfx::Rect tabstrip_bounds(
           browser_frame_->GetBoundsForTabStrip(browser_view_->tabstrip()));
       margins.cyTopHeight = tabstrip_bounds.bottom() + kDWMFrameTopOffset;