Consistently use LoFi for an entire page

net/url_request/url_request.h

Index: net/url_request/url_request.h
diff --git a/net/url_request/url_request.h b/net/url_request/url_request.h
index c6ef160e69c4fb2ace304bc27e9af0cbe6c972a9..9d7c13a0a6b7d3ef34fa9ba7d1272939866baa80 100644
--- a/net/url_request/url_request.h
+++ b/net/url_request/url_request.h
@@ -60,6 +60,18 @@ class X509Certificate;
 // excluding the "Set-Cookie:" part.
 typedef std::vector<std::string> ResponseCookies;
 
+// The LoFi state which determines whether to add the LoFi header. Must stay
+// in sync with the enum in navigation_params.h.
+enum LoFiState {
+  // Add the LoFi header to the request.
+  LOFI_ON = 0,
+  // Do not add the LoFi header to the request.
+  LOFI_OFF,
+  // Check with the network-quality-based triggering logic and add the header if

[bengr, 2015/08/25 00:00:02]

See my previous comment about not specifying the implementation.

[megjablon, 2015/08/25 20:29:47]

Done.

+  // the network is slow.
+  LOFI_DEFAULT,
+};
+
 //-----------------------------------------------------------------------------
 // A class  representing the asynchronous load of a data stream from an URL.
 //
@@ -298,6 +310,11 @@ class NET_EXPORT URLRequest : NON_EXPORTED_BASE(public base::NonThreadSafe),
   // and it is permissible for it to be null.
   void set_delegate(Delegate* delegate);
 
+  // TODO(megjablon): Add comment.

[bengr, 2015/08/25 00:00:02]

Add it.

[megjablon, 2015/08/25 20:29:47]

Done.

+  void set_lofi_state(LoFiState lofi_state);
+
+  LoFiState lofi_state() const { return lofi_state_; }
+
   // Indicates that the request body should be sent using chunked transfer
   // encoding. This method may only be called before Start() is called.
   void EnableChunkedUpload();
@@ -829,6 +846,9 @@ class NET_EXPORT URLRequest : NON_EXPORTED_BASE(public base::NonThreadSafe),
 
   scoped_ptr<const base::debug::StackTrace> stack_trace_;
 
+  // TODO(megjablon): Add comment

[bengr, 2015/08/25 00:00:02]

Add it.

[megjablon, 2015/08/25 20:29:47]

Done.

+  LoFiState lofi_state_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };