Add Data Saver support to Cronet

net/url_request/url_request_context_builder.h

Index: net/url_request/url_request_context_builder.h
diff --git a/net/url_request/url_request_context_builder.h b/net/url_request/url_request_context_builder.h
index 209b36ab809e39111b68700f805b655076cac47f..1c5f47449f714089ad768a7bb2694a6a6988a88c 100644
--- a/net/url_request/url_request_context_builder.h
+++ b/net/url_request/url_request_context_builder.h
@@ -29,6 +29,7 @@
 #include "net/proxy/proxy_service.h"
 #include "net/quic/quic_protocol.h"
 #include "net/socket/next_proto.h"
+#include "net/url_request/url_request_interceptor.h"

[mmenke, 2015/03/10 15:26:55]

Suggest forward declaring this.  May have to de-inline and rename
set_interceptor to so.

[bengr, 2015/03/10 23:43:31]

Done.

 
 namespace net {
 
@@ -176,6 +177,10 @@ class NET_EXPORT URLRequestContextBuilder {
     throttling_enabled_ = throttling_enabled;
   }
 
+  void set_interceptor(scoped_ptr<URLRequestInterceptor> interceptor) {
+    url_request_interceptor_ = interceptor.Pass();

[mmenke, 2015/03/10 15:26:55]

We should probably allow an ordered list of interceptors to be set, like we do
in ProfileIOData.  A bit unfortunate that we need to expose quite that level of
access, but I think it's an inevitable change.

[bengr, 2015/03/10 23:43:31]

Done.

+  }
+
   // Override the default in-memory cookie store and channel id service.
   // |cookie_store| must not be NULL. |channel_id_service| may be NULL to
   // disable channel id for this context.
@@ -226,6 +231,7 @@ class NET_EXPORT URLRequestContextBuilder {
   scoped_refptr<CookieStore> cookie_store_;
   scoped_ptr<FtpTransactionFactory> ftp_transaction_factory_;
   std::vector<SchemeFactory> extra_http_auth_handlers_;
+  scoped_ptr<URLRequestInterceptor> url_request_interceptor_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestContextBuilder);
 };