Expose RTT and downlink bandwidth using experimental Javascript API

third_party/WebKit/public/platform/WebNetworkStateNotifier.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebNetworkStateNotifier_h
 #define WebNetworkStateNotifier_h
 
+#include "platform/wtf/Time.h"

[dcheng, 2017/05/17 12:27:46]

I'm not sure we can use platform/wtf/Time.h in a public header. =/

Normally, we'd just IPC directly to a Mojo interface in Blink, but I'm not sure
if that's an option here--there's another network connection IPC that needs to
be in content/renderer (since it notifies observers), and it'd be weird to
define only one of them in Blink...

[tbansal1, 2017/05/18 00:10:30]

This should have been from the //base. Fixed.

 #include "public/platform/WebCommon.h"
 #include "public/platform/WebConnectionType.h"
 
 namespace blink {
 
 class WebNetworkStateNotifier {
  public:
   BLINK_PLATFORM_EXPORT static void SetOnLine(bool);
   BLINK_PLATFORM_EXPORT static void SetWebConnection(WebConnectionType,
                                                      double max_bandwidth_mbps);
+  BLINK_PLATFORM_EXPORT static void SetNetworkQuality(
+      TimeDelta http_rtt,
+      TimeDelta transport_rtt,
+      int downlink_throughput_kbps);
 
  private:
   WebNetworkStateNotifier();
 };
 
 }  // namespace blink
 
 #endif