PlzNavigate: store POST data in the FrameNavigationEntry

content/common/page_state_serialization.cc

Index: content/common/page_state_serialization.cc
diff --git a/content/common/page_state_serialization.cc b/content/common/page_state_serialization.cc
index af0db11467f8e256e291b1de97a801c2b855fbb1..3715ab7437622184077ad9406dd1179a6c42e8b4 100644
--- a/content/common/page_state_serialization.cc
+++ b/content/common/page_state_serialization.cc
@@ -14,6 +14,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
+#include "content/common/resource_request_body.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 
@@ -750,6 +751,18 @@ bool EncodePageState(const ExplodedPageState& exploded, std::string* encoded) {
   return true;
 }
 
+bool GeneratePostData(const ExplodedHttpBody& exploded,
+                      ResourceRequestBody* http_body) {
+  if (exploded.is_null)
+    return false;
+
+  http_body->set_identifier(exploded.identifier);
+  for (auto element : exploded.elements)
+    http_body->AppendExplodedHTTPBodyElement(element);
+
+  return true;
+}
+
 #if defined(OS_ANDROID)
 bool DecodePageStateWithDeviceScaleFactorForTesting(
     const std::string& encoded,