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 62b98a736ba704483d65ce39502ad9049c317703..0c140afb2867df46001b76d8faa5fc7ec81f5cea 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);
@@ -709,11 +710,13 @@ bool RenderWidgetHostViewAndroid::OnTouchEvent(
   if (gesture_text_selector_.OnTouchEvent(event))
     return true;
 
-  if (!gesture_provider_.OnTouchEvent(event))
+  auto result = gesture_provider_.OnTouchEvent(event);

[tdresser, 2014/10/31 12:34:11]

See other comment on auto.

+  if (!result.succeeded)
     return false;
 
   if (host_->ShouldForwardTouchEvent()) {
-    blink::WebTouchEvent web_event = CreateWebTouchEventFromMotionEvent(event);
+    blink::WebTouchEvent web_event =
+        CreateWebTouchEventFromMotionEvent(event, result.did_generate_scroll);
     host_->ForwardTouchEventWithLatencyInfo(web_event,
                                             CreateLatencyInfo(web_event));
   } else {