Propagate view background color when changing visible web contents.

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 738 matching lines @@
 
 bool RenderWidgetHostViewAura::IsShowing() {
   return window_->IsVisible();
 }
 
 gfx::Rect RenderWidgetHostViewAura::GetViewBounds() const {
   return window_->GetBoundsInScreen();
 }
 
 void RenderWidgetHostViewAura::SetBackgroundColor(SkColor color) {
+  if (color == background_color())
+    return;
   RenderWidgetHostViewBase::SetBackgroundColor(color);
   bool opaque = GetBackgroundOpaque();
   host_->SetBackgroundOpaque(opaque);
   window_->layer()->SetFillsBoundsOpaquely(opaque);
   window_->layer()->SetColor(color);
 }
 
 bool RenderWidgetHostViewAura::IsMouseLocked() {
   return event_handler_->mouse_locked();
 }
@@ skipping 130 matching lines @@
   legacy_render_widget_host_HWND_ = NULL;
   legacy_window_destroyed_ = true;
 }
 #endif
 
 void RenderWidgetHostViewAura::OnSwapCompositorFrame(
     uint32_t compositor_frame_sink_id,
     cc::CompositorFrame frame) {
   TRACE_EVENT0("content", "RenderWidgetHostViewAura::OnSwapCompositorFrame");
 
+  // Override the background color to the current compositor background.
+  // This allows us to, when navigating to a new page, transfer this color to
+  // that page. This allows us to pass this background color to new views on
+  // navigation.
+  SetBackgroundColor(frame.metadata.root_background_color);
+
   last_scroll_offset_ = frame.metadata.root_scroll_offset;
   if (frame.render_pass_list.empty())
     return;
 
   cc::Selection<gfx::SelectionBound> selection = frame.metadata.selection;
   if (IsUseZoomForDSFEnabled()) {
     float viewportToDIPScale = 1.0f / current_device_scale_factor_;
     gfx::PointF start_edge_top = selection.start.edge_top();
     gfx::PointF start_edge_bottom = selection.start.edge_bottom();
     gfx::PointF end_edge_top = selection.end.edge_top();
@@ skipping 1461 matching lines @@
 
 void RenderWidgetHostViewAura::SetPopupChild(
     RenderWidgetHostViewAura* popup_child_host_view) {
   popup_child_host_view_ = popup_child_host_view;
   event_handler_->SetPopupChild(
       popup_child_host_view,
       popup_child_host_view ? popup_child_host_view->event_handler() : nullptr);
 }
 
 }  // namespace content