Decompose //extensions/browser/BUILD.gn

extensions/browser/api/web_request/form_data_parser.cc

Index: extensions/browser/api/web_request/form_data_parser.cc
diff --git a/extensions/browser/api/web_request/form_data_parser.cc b/extensions/browser/api/web_request/form_data_parser.cc
index 6966e431b82cd8d7158911af59cad9cd1261befc..383fbdf5233f982151625122c263bb7c5ff95a41 100644
--- a/extensions/browser/api/web_request/form_data_parser.cc
+++ b/extensions/browser/api/web_request/form_data_parser.cc
@@ -397,7 +397,7 @@ bool FormDataParserUrlEncoded::GetNextNameValue(Result* result) {
 bool FormDataParserUrlEncoded::SetSource(base::StringPiece source) {
   if (source_set_)
     return false;  // We do not allow multiple sources for this parser.
-  source_.set(source.data(), source.size());
+  source_.set(source.data(), static_cast<int>(source.size()));
   source_set_ = true;
   source_malformed_ = false;
   return true;
@@ -534,7 +534,7 @@ bool FormDataParserMultipart::GetNextNameValue(Result* result) {
 bool FormDataParserMultipart::SetSource(base::StringPiece source) {
   if (source.data() == NULL || !source_.empty())
     return false;
-  source_.set(source.data(), source.size());
+  source_.set(source.data(), static_cast<int>(source.size()));
 
   switch (state_) {
     case STATE_INIT: