Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/core/request_header/offline_page_header.cc

Index: components/offline_pages/core/request_header/offline_page_header.cc
diff --git a/components/offline_pages/request_header/offline_page_header.cc b/components/offline_pages/core/request_header/offline_page_header.cc
similarity index 96%
rename from components/offline_pages/request_header/offline_page_header.cc
rename to components/offline_pages/core/request_header/offline_page_header.cc
index db7b7c9e56de125b4301f5628cd9bc67423ef4a5..9c58e7d82ed114d7bb1bfebe2e273f64217b6345 100644
--- a/components/offline_pages/request_header/offline_page_header.cc
+++ b/components/offline_pages/core/request_header/offline_page_header.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "components/offline_pages/request_header/offline_page_header.h"
+#include "components/offline_pages/core/request_header/offline_page_header.h"
 
 #include "base/strings/string_tokenizer.h"
 #include "base/strings/string_util.h"
@@ -82,8 +82,7 @@ std::string ReasonToString(OfflinePageHeader::Reason reason) {
 OfflinePageHeader::OfflinePageHeader()
     : did_fail_parsing_for_test(false),
       need_to_persist(false),
-      reason(Reason::NONE) {
-}
+      reason(Reason::NONE) {}
 
 OfflinePageHeader::OfflinePageHeader(const std::string& header_value)
     : did_fail_parsing_for_test(false),
@@ -108,13 +107,13 @@ std::string OfflinePageHeader::GetCompleteHeaderString() const {
   value += "=";
   value += need_to_persist ? "1" : "0";
 
-  value += " " ;
+  value += " ";
   value += kOfflinePageHeaderReasonKey;
   value += "=";
   value += ReasonToString(reason);
 
   if (!id.empty()) {
-    value += " " ;
+    value += " ";
     value += kOfflinePageHeaderIDKey;
     value += "=";
     value += id;