Index: content_browser_client.cc
===================================================================
--- content_browser_client.cc	(revision 263053)
+++ content_browser_client.cc	(working copy)
@@ -255,6 +255,10 @@
   return true;
 }
 
+SkColor ContentBrowserClient::GetBaseBackgroundColor(RenderViewHost* rvh) {
+  return SK_ColorWHITE;
+}
+
 base::FilePath ContentBrowserClient::GetDefaultDownloadDirectory() {
   return base::FilePath();
 }
Index: content_browser_client.h
===================================================================
--- content_browser_client.h	(revision 263053)
+++ content_browser_client.h	(working copy)
@@ -22,6 +22,7 @@
 #include "net/base/mime_util.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/url_request/url_request_job_factory.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "third_party/WebKit/public/web/WebNotificationPresenter.h"
 #include "ui/base/window_open_disposition.h"
 #include "webkit/browser/fileapi/file_system_context.h"
@@ -542,6 +543,9 @@
   // Clears browser cookies.
   virtual void ClearCookies(RenderViewHost* rvh) {}
 
+  // Returns the base background color.
+  virtual SkColor GetBaseBackgroundColor(RenderViewHost* rvh);
+
   // Returns the default download directory.
   // This can be called on any thread.
   virtual base::FilePath GetDefaultDownloadDirectory();