Move ResourceResponse struct into the Content API, since it's used in Chrome. While at it, I also...

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
===================================================================
--- chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc	(revision 111374)
+++ chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc	(working copy)
@@ -306,7 +306,7 @@
 
 void ChromeResourceDispatcherHostDelegate::OnResponseStarted(
     net::URLRequest* request,
-    ResourceResponse* response,
+    content::ResourceResponse* response,
     ResourceMessageFilter* filter) {
   LoadTimingObserver::PopulateTimingInfo(request, response);
 
@@ -339,7 +339,7 @@
 
 void ChromeResourceDispatcherHostDelegate::OnRequestRedirected(
     net::URLRequest* request,
-    ResourceResponse* response,
+    content::ResourceResponse* response,
     ResourceMessageFilter* filter) {
   LoadTimingObserver::PopulateTimingInfo(request, response);
 }