Decompose //extensions/browser/BUILD.gn

extensions/browser/updater/manifest_fetch_data.cc

Index: extensions/browser/updater/manifest_fetch_data.cc
diff --git a/extensions/browser/updater/manifest_fetch_data.cc b/extensions/browser/updater/manifest_fetch_data.cc
index 5bec4f6d570c6787841d2248ca5b87609a7abf23..2ad78b7de694b5f3d284da8b01ae91412de8da74 100644
--- a/extensions/browser/updater/manifest_fetch_data.cc
+++ b/extensions/browser/updater/manifest_fetch_data.cc
@@ -20,7 +20,7 @@ namespace {
 
 // Maximum length of an extension manifest update check url, since it is a GET
 // request. We want to stay under 2K because of proxies, etc.
-const int kExtensionsManifestMaxURLSize = 2000;
+const size_t kExtensionsManifestMaxURLSize = 2000;
 
 void AddEnabledStateToPing(std::string* ping_value,
                       const ManifestFetchData::PingData* ping_data) {
@@ -139,7 +139,7 @@ bool ManifestFetchData::AddExtension(const std::string& id,
       "x=" + net::EscapeQueryParamValue(base::JoinString(parts, "&"), true);
 
   // Check against our max url size, exempting the first extension added.
-  int new_size = full_url_.possibly_invalid_spec().size() + extra.size();
+  size_t new_size = full_url_.possibly_invalid_spec().size() + extra.size();
   if (!extension_ids_.empty() && new_size > kExtensionsManifestMaxURLSize) {
     UMA_HISTOGRAM_PERCENTAGE("Extensions.UpdateCheckHitUrlSizeLimit", 1);
     return false;