Draw a 2pt white stroke around selection rectangle in overview.

ui/views/border.cc

Index: ui/views/border.cc
diff --git a/ui/views/border.cc b/ui/views/border.cc
index 6e28cafb884debe05c05f5a638e179f3062f637f..ed024762374e51f740383b55a76341e17fdf58c3 100644
--- a/ui/views/border.cc
+++ b/ui/views/border.cc
@@ -44,13 +44,15 @@ void SidedSolidBorder::Paint(const View& view, gfx::Canvas* canvas) {
   // Top border.
   canvas->FillRect(gfx::Rect(0, 0, view.width(), insets_.top()), color_);
   // Left border.
-  canvas->FillRect(gfx::Rect(0, 0, insets_.left(), view.height()), color_);
+  canvas->FillRect(gfx::Rect(0, insets_.top(), insets_.left(),
+                             view.height() - insets_.height()), color_);
   // Bottom border.
   canvas->FillRect(gfx::Rect(0, view.height() - insets_.bottom(), view.width(),
                              insets_.bottom()), color_);
   // Right border.
-  canvas->FillRect(gfx::Rect(view.width() - insets_.right(), 0, insets_.right(),
-                             view.height()), color_);
+  canvas->FillRect(gfx::Rect(view.width() - insets_.right(), insets_.top(),
+                             insets_.right(), view.height() - insets_.height()),
+                   color_);
 }
 
 gfx::Insets SidedSolidBorder::GetInsets() const {