Replace scoped_ptr with std::unique_ptr in //ui

ui/gl/gl_surface_osmesa.cc

Index: ui/gl/gl_surface_osmesa.cc
diff --git a/ui/gl/gl_surface_osmesa.cc b/ui/gl/gl_surface_osmesa.cc
index e39f9bd1a87212c2c43cc4d8d8249382478195c4..23420747d7b5954846cf7bbd0895f53ff3592663 100644
--- a/ui/gl/gl_surface_osmesa.cc
+++ b/ui/gl/gl_surface_osmesa.cc
@@ -36,7 +36,7 @@ void GLSurfaceOSMesa::Destroy() {
 bool GLSurfaceOSMesa::Resize(const gfx::Size& new_size,
                              float scale_factor,
                              bool has_alpha) {
-  scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current;
+  std::unique_ptr<ui::ScopedMakeCurrent> scoped_make_current;
   GLContext* current_context = GLContext::GetCurrent();
   bool was_current =
       current_context && current_context->IsCurrent(this);
@@ -47,7 +47,7 @@ bool GLSurfaceOSMesa::Resize(const gfx::Size& new_size,
   }
 
   // Preserve the old buffer.
-  scoped_ptr<int32_t[]> old_buffer(buffer_.release());
+  std::unique_ptr<int32_t[]> old_buffer(buffer_.release());
 
   base::CheckedNumeric<int> checked_size = sizeof(buffer_[0]);
   checked_size *= new_size.width();