content: Fix devtools layer border rendering.

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <limits>
@@ skipping 974 matching lines @@
 }
 
 void RenderWidgetCompositor::SetShowPaintRects(bool show) {
   cc::LayerTreeDebugState debug_state = layer_tree_host_->GetDebugState();
   debug_state.show_paint_rects = show;
   layer_tree_host_->SetDebugState(debug_state);
 }
 
 void RenderWidgetCompositor::SetShowDebugBorders(bool show) {
   cc::LayerTreeDebugState debug_state = layer_tree_host_->GetDebugState();
-  debug_state.show_debug_borders = show;
+  if (show)
+    debug_state.show_debug_borders.set();
+  else
+    debug_state.show_debug_borders.reset();
   layer_tree_host_->SetDebugState(debug_state);
 }
 
 void RenderWidgetCompositor::SetShowScrollBottleneckRects(bool show) {
   cc::LayerTreeDebugState debug_state = layer_tree_host_->GetDebugState();
   debug_state.show_touch_event_handler_rects = show;
   debug_state.show_wheel_event_handler_rects = show;
   debug_state.show_non_fast_scrollable_rects = show;
   layer_tree_host_->SetDebugState(debug_state);
 }
@@ skipping 141 matching lines @@
 void RenderWidgetCompositor::SetContentSourceId(uint32_t id) {
   layer_tree_host_->SetContentSourceId(id);
 }
 
 void RenderWidgetCompositor::SetLocalSurfaceId(
     const cc::LocalSurfaceId& local_surface_id) {
   layer_tree_host_->SetLocalSurfaceId(local_surface_id);
 }
 
 }  // namespace content