Introduce Http{Request,Response} mojom structs.

components/html_viewer/blink_url_request_type_converters.cc

Index: components/html_viewer/blink_url_request_type_converters.cc
diff --git a/components/html_viewer/blink_url_request_type_converters.cc b/components/html_viewer/blink_url_request_type_converters.cc
index 920583c842b1489c3228a441a407d21485dc6aee..9e6a40d4c98f3d98803b933da4107f3e08da4752 100644
--- a/components/html_viewer/blink_url_request_type_converters.cc
+++ b/components/html_viewer/blink_url_request_type_converters.cc
@@ -26,17 +26,17 @@ class HeaderFlattener : public blink::WebHTTPHeaderVisitor {
     if (LowerCaseEqualsASCII(name_latin1, "accept"))
       has_accept_header_ = true;
 
-    HTTPHeaderPtr header = HTTPHeader::New();
+    HttpHeaderPtr header = HttpHeader::New();
     header->name = name_latin1;
     header->value = value_latin1;
     buffer_.push_back(header.Pass());
   }
 
-  Array<HTTPHeaderPtr> GetBuffer() {
+  Array<HttpHeaderPtr> GetBuffer() {
     // In some cases, WebKit doesn't add an Accept header, but not having the
     // header confuses some web servers.  See bug 808613.
     if (!has_accept_header_) {
-      HTTPHeaderPtr header = HTTPHeader::New();
+      HttpHeaderPtr header = HttpHeader::New();
       header->name = "Accept";
       header->value = "*/*";
       buffer_.push_back(header.Pass());
@@ -46,7 +46,7 @@ class HeaderFlattener : public blink::WebHTTPHeaderVisitor {
   }
 
  private:
-  Array<HTTPHeaderPtr> buffer_;
+  Array<HttpHeaderPtr> buffer_;
   bool has_accept_header_;
 };