Initialize renderer color preferences to reasonable defaults.

content/shell/shell_gtk.cc

Index: content/shell/shell_gtk.cc
diff --git a/content/shell/shell_gtk.cc b/content/shell/shell_gtk.cc
index 6261b805444719fbad90c143ffdb2783bf3f09f1..2cfbc475fb07ae2981a61e49e4df52bc5687555b 100644
--- a/content/shell/shell_gtk.cc
+++ b/content/shell/shell_gtk.cc
@@ -17,7 +17,6 @@
 #include "content/public/common/renderer_preferences.h"
 #include "content/shell/shell_browser_context.h"
 #include "content/shell/shell_content_browser_client.h"
-#include "third_party/skia/include/core/SkColor.h"
 
 namespace content {
 
@@ -190,20 +189,6 @@ void Shell::PlatformCreateWindow(int width, int height) {
 void Shell::PlatformSetContents() {
   WebContentsView* content_view = web_contents_->GetView();
   gtk_container_add(GTK_CONTAINER(vbox_), content_view->GetNativeView());
-
-  // As an additional requirement on Linux, we must set the colors for the
-  // render widgets in webkit.
-  content::RendererPreferences* prefs =
-      web_contents_->GetMutableRendererPrefs();
-  prefs->focus_ring_color = SkColorSetARGB(255, 229, 151, 0);
-  prefs->thumb_active_color = SkColorSetRGB(244, 244, 244);
-  prefs->thumb_inactive_color = SkColorSetRGB(234, 234, 234);
-  prefs->track_color = SkColorSetRGB(211, 211, 211);
-
-  prefs->active_selection_bg_color = SkColorSetRGB(30, 144, 255);
-  prefs->active_selection_fg_color = SK_ColorWHITE;
-  prefs->inactive_selection_bg_color = SkColorSetRGB(200, 200, 200);
-  prefs->inactive_selection_fg_color = SkColorSetRGB(50, 50, 50);
 }
 
 void Shell::SizeTo(int width, int height) {