[Android] Disable pull-to-refresh with overflow:hidden

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 1449 matching lines @@
   if (top_controls_manager_) {
     metadata.location_bar_offset =
         gfx::Vector2dF(0.f, top_controls_manager_->ControlsTopOffset());
     metadata.location_bar_content_translation =
         gfx::Vector2dF(0.f, top_controls_manager_->ContentTopOffset());
   }
 
   active_tree_->GetViewportSelection(&metadata.selection_start,
                                      &metadata.selection_end);
 
+  LayerImpl* root_layer_for_overflow = OuterViewportScrollLayer()
+                                           ? OuterViewportScrollLayer()
+                                           : InnerViewportScrollLayer();
+  if (root_layer_for_overflow) {
+    metadata.root_overflow_x_hidden =
+        !root_layer_for_overflow->user_scrollable_horizontal();
+    metadata.root_overflow_y_hidden =
+        !root_layer_for_overflow->user_scrollable_vertical();
+  }
+
   if (!InnerViewportScrollLayer())
     return metadata;
 
   // TODO(miletus) : Change the metadata to hold ScrollOffset.
   metadata.root_scroll_offset = gfx::ScrollOffsetToVector2dF(
       active_tree_->TotalScrollOffset());
 
   return metadata;
 }
 
@@ skipping 2026 matching lines @@
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfForwardingToMainThread() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnForwardScrollUpdateToMainThreadOnImpl();
 }
 
 }  // namespace cc