Enhance chrome.app.window API with window background color

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 09fd4bb6ba8b2fbc9c40e7addaf4b58e77fcb138..679953f8b2a384a64ed6c6cda2b48d7c69dbbf3f 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1247,6 +1247,8 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
     IPC_MESSAGE_HANDLER(ViewMsg_MoveOrResizeStarted, OnMoveOrResizeStarted)
     IPC_MESSAGE_HANDLER(ViewMsg_SetBackgroundOpaque, OnSetBackgroundOpaque)
+    IPC_MESSAGE_HANDLER(ViewMsg_SetBaseBackgroundColor,
+                        OnSetBaseBackgroundColor)
     IPC_MESSAGE_HANDLER(ViewMsg_EnablePreferredSizeChangedMode,
                         OnEnablePreferredSizeChangedMode)
     IPC_MESSAGE_HANDLER(ViewMsg_EnableAutoResize, OnEnableAutoResize)
@@ -2251,6 +2253,11 @@ void RenderViewImpl::OnSetBackgroundOpaque(bool opaque) {
     compositor_->setHasTransparentBackground(!opaque);
 }
 
+void RenderViewImpl::OnSetBaseBackgroundColor(SkColor color) {
+  if (frame_widget_)
+    frame_widget_->setBaseBackgroundColor(color);
+}
+
 void RenderViewImpl::OnSetActive(bool active) {
   if (webview())
     webview()->setIsActive(active);