Introduce bottom controls to CC and let it respond to scrolling

cc/ipc/struct_traits_unittest.cc

 // Copyright 2016 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 "base/message_loop/message_loop.h"
 #include "cc/input/selection.h"
 #include "cc/ipc/traits_test_service.mojom.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/render_pass.h"
 #include "cc/quads/render_pass_draw_quad.h"
@@ skipping 125 matching lines @@
 TEST_F(StructTraitsTest, CompositorFrameMetadata) {
   const float device_scale_factor = 2.6f;
   const gfx::Vector2dF root_scroll_offset(1234.5f, 6789.1f);
   const float page_scale_factor = 1337.5f;
   const gfx::SizeF scrollable_viewport_size(1337.7f, 1234.5f);
   const gfx::SizeF root_layer_size(1234.5f, 5432.1f);
   const float min_page_scale_factor = 3.5f;
   const float max_page_scale_factor = 4.6f;
   const bool root_overflow_x_hidden = true;
   const bool root_overflow_y_hidden = true;
-  const gfx::Vector2dF location_bar_offset(1234.5f, 5432.1f);
-  const gfx::Vector2dF location_bar_content_translation(1234.5f, 5432.1f);
+  const gfx::Vector2dF top_bar_translate(1234.5f, 5432.1f);
+  const gfx::Vector2dF top_bar_shown(1234.5f, 5432.1f);
+  const gfx::Vector2dF bottom_bar_translate(1234.5f, 5432.1f);
+  const gfx::Vector2dF bottom_bar_shown(1234.5f, 5432.1f);
   const uint32_t root_background_color = 1337;
   Selection<gfx::SelectionBound> selection;
   selection.start.SetEdge(gfx::PointF(1234.5f, 67891.f),
                           gfx::PointF(5432.1f, 1987.6f));
   selection.start.set_visible(true);
   selection.start.set_type(gfx::SelectionBound::CENTER);
   selection.end.SetEdge(gfx::PointF(1337.5f, 52124.f),
                         gfx::PointF(1234.3f, 8765.6f));
   selection.end.set_visible(false);
   selection.end.set_type(gfx::SelectionBound::RIGHT);
@@ skipping 11 matching lines @@
   CompositorFrameMetadata input;
   input.device_scale_factor = device_scale_factor;
   input.root_scroll_offset = root_scroll_offset;
   input.page_scale_factor = page_scale_factor;
   input.scrollable_viewport_size = scrollable_viewport_size;
   input.root_layer_size = root_layer_size;
   input.min_page_scale_factor = min_page_scale_factor;
   input.max_page_scale_factor = max_page_scale_factor;
   input.root_overflow_x_hidden = root_overflow_x_hidden;
   input.root_overflow_y_hidden = root_overflow_y_hidden;
-  input.location_bar_offset = location_bar_offset;
-  input.location_bar_content_translation = location_bar_content_translation;
+  input.top_bar_translate = top_bar_translate;
+  input.top_bar_shown = top_bar_shown;
+  input.bottom_bar_translate = bottom_bar_translate;
+  input.bottom_bar_shown = bottom_bar_shown;
   input.root_background_color = root_background_color;
   input.selection = selection;
   input.latency_info = latency_infos;
   input.satisfies_sequences = satisfies_sequences;
   input.referenced_surfaces = referenced_surfaces;
 
   mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
   CompositorFrameMetadata output;
   proxy->EchoCompositorFrameMetadata(input, &output);
   EXPECT_EQ(device_scale_factor, output.device_scale_factor);
   EXPECT_EQ(root_scroll_offset, output.root_scroll_offset);
   EXPECT_EQ(page_scale_factor, output.page_scale_factor);
   EXPECT_EQ(scrollable_viewport_size, output.scrollable_viewport_size);
   EXPECT_EQ(root_layer_size, output.root_layer_size);
   EXPECT_EQ(min_page_scale_factor, output.min_page_scale_factor);
   EXPECT_EQ(max_page_scale_factor, output.max_page_scale_factor);
   EXPECT_EQ(root_overflow_x_hidden, output.root_overflow_x_hidden);
   EXPECT_EQ(root_overflow_y_hidden, output.root_overflow_y_hidden);
-  EXPECT_EQ(location_bar_offset, output.location_bar_offset);
-  EXPECT_EQ(location_bar_content_translation,
-            output.location_bar_content_translation);
+  EXPECT_EQ(top_bar_translate, output.top_bar_translate);
+  EXPECT_EQ(top_bar_shown, output.top_bar_shown);
+  EXPECT_EQ(bottom_bar_translate, output.bottom_bar_translate);
+  EXPECT_EQ(bottom_bar_shown, output.bottom_bar_shown);
   EXPECT_EQ(root_background_color, output.root_background_color);
   EXPECT_EQ(selection, output.selection);
   EXPECT_EQ(latency_infos.size(), output.latency_info.size());
   ui::LatencyInfo::LatencyComponent component;
   EXPECT_TRUE(output.latency_info[0].FindLatency(
       ui::LATENCY_BEGIN_SCROLL_LISTENER_UPDATE_MAIN_COMPONENT, 1337,
       &component));
   EXPECT_EQ(7331, component.sequence_number);
   EXPECT_EQ(satisfies_sequences.size(), output.satisfies_sequences.size());
   for (uint32_t i = 0; i < satisfies_sequences.size(); ++i)
@@ skipping 515 matching lines @@
   EXPECT_EQ(y_plane_resource_id, out_quad->y_plane_resource_id());
   EXPECT_EQ(u_plane_resource_id, out_quad->u_plane_resource_id());
   EXPECT_EQ(v_plane_resource_id, out_quad->v_plane_resource_id());
   EXPECT_EQ(a_plane_resource_id, out_quad->a_plane_resource_id());
   EXPECT_EQ(color_space, out_quad->color_space);
   EXPECT_EQ(resource_offset, out_quad->resource_offset);
   EXPECT_EQ(resource_multiplier, out_quad->resource_multiplier);
 }
 
 }  // namespace cc