Expose native, desktop and mobile gesture detection defaults

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 32d0c022837e4fb27307ab3f99d7952f32369550..54321bfb43f8b1e5b938c4fe3dce53464e7456d7 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -217,7 +217,8 @@ scoped_ptr<TouchSelectionController> CreateSelectionController(
 }
 
 ui::GestureProvider::Config CreateGestureProviderConfig() {
-  ui::GestureProvider::Config config = ui::DefaultGestureProviderConfig();
+  ui::GestureProvider::Config config = ui::GetGestureProviderConfig(
+      ui::GestureProviderConfigType::CURRENT_PLATFORM);
   config.disable_click_delay =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableClickDelay);
@@ -713,7 +714,10 @@ bool RenderWidgetHostViewAndroid::OnTouchEvent(
     return false;
 
   if (host_->ShouldForwardTouchEvent()) {
-    blink::WebTouchEvent web_event = CreateWebTouchEventFromMotionEvent(event);
+    bool event_may_cause_scrolling =
+        gesture_provider_.LastTouchEventDidGenerateScroll();
+    blink::WebTouchEvent web_event =
+        CreateWebTouchEventFromMotionEvent(event, event_may_cause_scrolling);
     host_->ForwardTouchEventWithLatencyInfo(web_event,
                                             CreateLatencyInfo(web_event));
   } else {