Use scroll-boundary-behavior to control overscroll-refresh/glow on android.

third_party/WebKit/Source/core/page/ChromeClient.h

Index: third_party/WebKit/Source/core/page/ChromeClient.h
diff --git a/third_party/WebKit/Source/core/page/ChromeClient.h b/third_party/WebKit/Source/core/page/ChromeClient.h
index 53c8f13f8f3bbf5f0a69ff779d504f98a2733cf1..987b594ed41619beb8bd281b5e252cf03411aea9 100644
--- a/third_party/WebKit/Source/core/page/ChromeClient.h
+++ b/third_party/WebKit/Source/core/page/ChromeClient.h
@@ -46,6 +46,7 @@
 #include "public/platform/WebDragOperation.h"
 #include "public/platform/WebEventListenerProperties.h"
 #include "public/platform/WebFocusType.h"
+#include "public/platform/WebScrollBoundaryBehavior.h"
 
 // To avoid conflicts with the CreateWindow macro from the Windows SDK...
 #undef CreateWindow
@@ -141,7 +142,8 @@ class CORE_EXPORT ChromeClient : public PlatformChromeClient {
   virtual void DidOverscroll(const FloatSize& overscroll_delta,
                              const FloatSize& accumulated_overscroll,
                              const FloatPoint& position_in_viewport,
-                             const FloatSize& velocity_in_viewport) = 0;
+                             const FloatSize& velocity_in_viewport,
+                             const WebScrollBoundaryBehavior&) = 0;
 
   virtual bool ShouldReportDetailedMessageForSource(LocalFrame&,
                                                     const String& source) = 0;
@@ -328,6 +330,8 @@ class CORE_EXPORT ChromeClient : public PlatformChromeClient {
 
   virtual void DidUpdateBrowserControls() const {}
 
+  virtual void SetScrollBoundaryBehavior(const WebScrollBoundaryBehavior&) {}
+
   virtual void RegisterPopupOpeningObserver(PopupOpeningObserver*) = 0;
   virtual void UnregisterPopupOpeningObserver(PopupOpeningObserver*) = 0;
   virtual void NotifyPopupOpeningObservers() const = 0;