Making ResourceRequestBody part of //content's public API.

content/child/resource_dispatcher.cc

Index: content/child/resource_dispatcher.cc
diff --git a/content/child/resource_dispatcher.cc b/content/child/resource_dispatcher.cc
index 3c662798d94c22d58468bc7dd0cd8d1be1f50f74..461da5c1df50f68a0d405c6029f1ffc888e1643f 100644
--- a/content/child/resource_dispatcher.cc
+++ b/content/child/resource_dispatcher.cc
@@ -543,7 +543,7 @@ void ResourceDispatcher::FlushDeferredMessages(int request_id) {
 }
 
 void ResourceDispatcher::StartSync(const RequestInfo& request_info,
-                                   ResourceRequestBody* request_body,
+                                   ResourceRequestBodyImpl* request_body,
                                    SyncLoadResponse* response) {
   std::unique_ptr<ResourceRequest> request =
       CreateRequest(request_info, request_body, NULL);
@@ -574,7 +574,7 @@ void ResourceDispatcher::StartSync(const RequestInfo& request_info,
 }
 
 int ResourceDispatcher::StartAsync(const RequestInfo& request_info,
-                                   ResourceRequestBody* request_body,
+                                   ResourceRequestBodyImpl* request_body,
                                    std::unique_ptr<RequestPeer> peer) {
   GURL frame_origin;
   std::unique_ptr<ResourceRequest> request =
@@ -735,7 +735,7 @@ void ResourceDispatcher::ReleaseResourcesInMessageQueue(MessageQueue* queue) {
 
 std::unique_ptr<ResourceRequest> ResourceDispatcher::CreateRequest(
     const RequestInfo& request_info,
-    ResourceRequestBody* request_body,
+    ResourceRequestBodyImpl* request_body,
     GURL* frame_origin) {
   std::unique_ptr<ResourceRequest> request(new ResourceRequest);
   request->method = request_info.method;