Mac: Remove white CALayers

chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm

Index: chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm
diff --git a/chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm b/chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm
index b85b75815391ca3da848969b4c4149a6116e30b2..65dbbcc9d6d8611ee95bf904db4c21aa0a340033 100644
--- a/chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm
+++ b/chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.mm
@@ -251,17 +251,6 @@ - (void)ensureContentsVisibleInSuperview:(NSView*)superview {
                                           NSViewHeightSizable];
 
   [contentsContainer setNeedsDisplay:YES];
-
-  // Push the background color down to the RenderWidgetHostView, so that if
-  // there is a flash between contents appearing, it will be the theme's color,
-  // not white.
-  SkColor skBackgroundColor = SK_ColorWHITE;
-  const ThemeProvider* theme = [[[self view] window] themeProvider];
-  if (theme)
-    skBackgroundColor = theme->GetColor(ThemeProperties::COLOR_NTP_BACKGROUND);
-  content::RenderWidgetHostView* rwhv = contents_->GetRenderWidgetHostView();
-  if (rwhv)
-    rwhv->SetBackgroundColor(skBackgroundColor);
 }
 
 - (void)updateFullscreenWidgetFrame {