Adding DRP specfic UMA for FirstContentfulPaint

content/common/frame_messages.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 272 matching lines @@
 
   // Timestamp at which the UI action that triggered the navigation originated.
   IPC_STRUCT_MEMBER(base::TimeTicks, ui_timestamp)
 
   // True if the document for the load is enforcing strict mixed content
   // checking.
   IPC_STRUCT_MEMBER(bool, should_enforce_strict_mixed_content_checking)
 
   // True if the navigation originated as an srcdoc attribute.
   IPC_STRUCT_MEMBER(bool, is_srcdoc)
+
+  // True if Lofi was on for this navigation.

[tbansal1, 2016/03/07 18:05:05]

s/Lofi/LoFi/

[RyanSturm, 2016/03/08 19:47:43]

Done.

+  IPC_STRUCT_MEMBER(bool, is_using_lofi)
+
+  // True if the navigation was proxied through data reduction proxy.
+  IPC_STRUCT_MEMBER(bool, used_data_reduction_proxy)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_PostMessage_Params)
   // Whether the data format is supplied as serialized script value, or as
   // a simple string. If it is a raw string, must be converted from string to a
   // WebSerializedScriptValue in the renderer process.
   IPC_STRUCT_MEMBER(bool, is_data_raw_string)
 
   // The serialized script value.
   IPC_STRUCT_MEMBER(base::string16, data)
@@ skipping 1134 matching lines @@
 IPC_MESSAGE_ROUTED3(FrameHostMsg_FindMatchRects_Reply,
                     int /* version */,
                     std::vector<gfx::RectF> /* rects */,
                     gfx::RectF /* active_rect */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.