PlzNavigate: store POST data in the FrameNavigationEntry

content/common/page_state_serialization.h

Index: content/common/page_state_serialization.h
diff --git a/content/common/page_state_serialization.h b/content/common/page_state_serialization.h
index 24d81981ef84bbba89f624f01e58163565e154a8..c54ea810c0e0da325ccce2b70509ebfd5f333c2a 100644
--- a/content/common/page_state_serialization.h
+++ b/content/common/page_state_serialization.h
@@ -21,6 +21,8 @@
 
 namespace content {
 
+class ResourceRequestBody;
+
 struct CONTENT_EXPORT ExplodedHttpBodyElement {
   blink::WebHTTPBody::Element::Type type;
   std::string data;
@@ -88,6 +90,11 @@ CONTENT_EXPORT bool DecodePageState(const std::string& encoded,
 CONTENT_EXPORT bool EncodePageState(const ExplodedPageState& exploded,
                                     std::string* encoded);
 
+// If |exploded| is not null, initializes |http_body| with the data from
+// |exploded|. Returns false otherwise.
+bool GeneratePostData(const ExplodedHttpBody& exploded,
+                      ResourceRequestBody* http_body);
+
 #if defined(OS_ANDROID)
 CONTENT_EXPORT bool DecodePageStateWithDeviceScaleFactorForTesting(
     const std::string& encoded,