Expose RTT and downlink bandwidth using experimental Javascript API

content/renderer/render_thread_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "base/memory/memory_coordinator_client.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/user_metrics_action.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/threading/thread_checker.h"
+#include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "components/variations/child_process_field_trial_syncer.h"
 #include "content/child/child_thread_impl.h"
 #include "content/child/memory/child_memory_coordinator_impl.h"
 #include "content/common/associated_interface_registry_impl.h"
 #include "content/common/content_export.h"
 #include "content/common/frame.mojom.h"
 #include "content/common/frame_replication_state.h"
 #include "content/common/frame_sink_provider.mojom.h"
@@ skipping 521 matching lines @@
   void CreateView(mojom::CreateViewParamsPtr params) override;
   void CreateFrame(mojom::CreateFrameParamsPtr params) override;
   void CreateFrameProxy(int32_t routing_id,
                         int32_t render_view_routing_id,
                         int32_t opener_routing_id,
                         int32_t parent_routing_id,
                         const FrameReplicationState& replicated_state) override;
   void OnNetworkConnectionChanged(
       net::NetworkChangeNotifier::ConnectionType type,
       double max_bandwidth_mbps) override;
-  void OnNetworkQualityChanged(double http_rtt_msec,
-                               double transport_rtt_msec,
+  void OnNetworkQualityChanged(base::TimeDelta http_rtt,
+                               base::TimeDelta transport_rtt,
                                double bandwidth_kbps) override;
   void SetWebKitSharedTimersSuspended(bool suspend) override;
   void UpdateScrollbarTheme(
       mojom::UpdateScrollbarThemeParamsPtr params) override;
   void OnSystemColorsChanged(int32_t aqua_color_variant,
                              const std::string& highlight_text_color,
                              const std::string& highlight_color) override;
   void PurgePluginListCache(bool reload_pages) override;
 
   void OnMemoryPressure(
@@ skipping 219 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_