Ensure ExtensionHost sets the RendererPrefs for its TabContents. This fixes a

bug with ChromeOS where the Select File dialog's selected text color was
white on white.

BUG=chromium-os:23379
TEST=see bug for repro

Review URL: http://codereview.chromium.org/8894021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@114126 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/extension_host.cc

@@ -17,6 +17,7 @@
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/browser/ui/app_modal_dialogs/message_box_handler.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -134,6 +135,12 @@ ExtensionHost::ExtensionHost(const Extension* extension,
   host_contents_->set_delegate(this);
   host_contents_->set_view_type(host_type);
 
+  // TODO(mpcomplete): This was lifted from PrefsTabHelper, but it might be
+  // better to reuse all of PrefsTabHelper. We'd first have to make it not
+  // depend on TabContentsWrapper.
+  renderer_preferences_util::UpdateFromSystemSettings(
+      host_contents_->GetMutableRendererPrefs(), profile_);
+
   render_view_host_ = host_contents_->render_view_host();
 
   // Listen for when an extension is unloaded from the same profile, as it may