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

cc/trees/layer_tree_host_impl_unittest.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 <cmath>
 
 #include "base/bind.h"
@@ skipping 1826 matching lines @@
   DrawFrame();
   {
     CompositorFrameMetadata metadata =
         host_impl_->MakeCompositorFrameMetadata();
     EXPECT_EQ(gfx::Vector2dF(), metadata.root_scroll_offset);
     EXPECT_EQ(1.f, metadata.page_scale_factor);
     EXPECT_EQ(gfx::SizeF(50.f, 50.f), metadata.scrollable_viewport_size);
     EXPECT_EQ(gfx::SizeF(100.f, 100.f), metadata.root_layer_size);
     EXPECT_EQ(0.5f, metadata.min_page_scale_factor);
     EXPECT_EQ(4.f, metadata.max_page_scale_factor);
+    EXPECT_FALSE(metadata.root_overflow_x_hidden);
+    EXPECT_FALSE(metadata.root_overflow_y_hidden);
   }
 
   // Scrolling should update metadata immediately.
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
   host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10));
   {
     CompositorFrameMetadata metadata =
         host_impl_->MakeCompositorFrameMetadata();
     EXPECT_EQ(gfx::Vector2dF(0.f, 10.f), metadata.root_scroll_offset);
   }
   host_impl_->ScrollEnd();
   {
     CompositorFrameMetadata metadata =
         host_impl_->MakeCompositorFrameMetadata();
     EXPECT_EQ(gfx::Vector2dF(0.f, 10.f), metadata.root_scroll_offset);
   }
 
+  // Root "overflow: hidden" properties should be reflected.
+  {
+    host_impl_->active_tree()
+        ->InnerViewportScrollLayer()
+        ->set_user_scrollable_horizontal(false);
+    CompositorFrameMetadata metadata =
+        host_impl_->MakeCompositorFrameMetadata();
+    EXPECT_TRUE(metadata.root_overflow_x_hidden);
+    EXPECT_FALSE(metadata.root_overflow_y_hidden);
+
+    host_impl_->active_tree()
+        ->InnerViewportScrollLayer()
+        ->set_user_scrollable_vertical(false);
+    metadata = host_impl_->MakeCompositorFrameMetadata();
+    EXPECT_TRUE(metadata.root_overflow_x_hidden);
+    EXPECT_TRUE(metadata.root_overflow_y_hidden);
+  }
+
   // Page scale should update metadata correctly (shrinking only the viewport).
   host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture);
   host_impl_->PinchGestureBegin();
   host_impl_->PinchGestureUpdate(2.f, gfx::Point());
   host_impl_->PinchGestureEnd();
   host_impl_->ScrollEnd();
   {
     CompositorFrameMetadata metadata =
         host_impl_->MakeCompositorFrameMetadata();
     EXPECT_EQ(gfx::Vector2dF(0.f, 10.f), metadata.root_scroll_offset);
@@ skipping 6340 matching lines @@
   // surface.
   EXPECT_EQ(0, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_EQ(1, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_LE(1, num_lost_surfaces_);
 }
 
 }  // namespace
 }  // namespace cc