Expose RTT and downlink bandwidth using experimental Javascript API

third_party/WebKit/public/platform/WebNetworkStateNotifier.h

Index: third_party/WebKit/public/platform/WebNetworkStateNotifier.h
diff --git a/third_party/WebKit/public/platform/WebNetworkStateNotifier.h b/third_party/WebKit/public/platform/WebNetworkStateNotifier.h
index 396ddd5d128bc80dee573c4d2850ae737f020e79..1727ee4f89e4e6b0686d220b609dbc64da10c7df 100644
--- a/third_party/WebKit/public/platform/WebNetworkStateNotifier.h
+++ b/third_party/WebKit/public/platform/WebNetworkStateNotifier.h
@@ -31,6 +31,7 @@
 #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"
 
@@ -41,6 +42,10 @@ class WebNetworkStateNotifier {
   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();