Reduce the memory usage of bookmarks storage

components/bookmarks/browser/bookmark_codec.cc

Index: components/bookmarks/browser/bookmark_codec.cc
diff --git a/components/bookmarks/browser/bookmark_codec.cc b/components/bookmarks/browser/bookmark_codec.cc
index abbb1cd7b64289eceba9eff25a87872d786d9304..8ee8a6170d2312a6797605b0d378f500869be173 100644
--- a/components/bookmarks/browser/bookmark_codec.cc
+++ b/components/bookmarks/browser/bookmark_codec.cc
@@ -13,6 +13,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
+#include "base/sys_info.h"

[sky, 2017/05/26 03:07:38]

You shouldn't need this key anymore.

[ssid, 2017/05/30 21:39:14]

Done.

 #include "base/values.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/strings/grit/components_strings.h"
@@ -433,6 +434,14 @@ void BookmarkCodec::DecodeMetaInfoHelper(
     const std::string& prefix,
     BookmarkNode::MetaInfoMap* meta_info_map) {
   for (base::DictionaryValue::Iterator it(dict); !it.IsAtEnd(); it.Advance()) {
+    bool is_excluded = false;
+    for (const auto& excluded : excluded_meta_info_keys_) {
+      if (it.key().find(excluded) != std::string::npos)
+        is_excluded = true;
+    }
+    if (is_excluded)
+      continue;
+
     if (it.value().IsType(base::Value::Type::DICTIONARY)) {
       const base::DictionaryValue* subdict;
       it.value().GetAsDictionary(&subdict);