webui: minimize webui flicker.

content/public/common/content_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_client.h"
 
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
 #include "content/public/common/user_agent.h"
 #include "ui/gfx/image/image.h"
@@ skipping 75 matching lines @@
     int resource_id,
     ui::ScaleFactor scale_factor) const {
   return base::StringPiece();
 }
 
 base::RefCountedStaticMemory* ContentClient::GetDataResourceBytes(
     int resource_id) const {
   return NULL;
 }
 
+WebUITextStyles ContentClient::GetWebUITextStyles() const {
+  return WebUITextStyles();
+}
+
 gfx::Image& ContentClient::GetNativeImageNamed(int resource_id) const {
   CR_DEFINE_STATIC_LOCAL(gfx::Image, kEmptyImage, ());
   return kEmptyImage;
 }
 
 std::string ContentClient::GetProcessTypeNameInEnglish(int type) {
   NOTIMPLEMENTED();
   return std::string();
 }
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 bool ContentClient::GetSandboxProfileForSandboxType(
     int sandbox_type,
     int* sandbox_profile_resource_id) const {
   return false;
 }
 #endif
 
 }  // namespace content