Add flag to launch two displays for mus+ash.

services/ui/ws/test_utils.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 "services/ui/ws/test_utils.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 11 matching lines @@
 namespace ws {
 namespace test {
 namespace {
 
 // -----------------------------------------------------------------------------
 // Empty implementation of PlatformDisplay.
 class TestPlatformDisplay : public PlatformDisplay {
  public:
   explicit TestPlatformDisplay(int32_t* cursor_id_storage)
       : cursor_id_storage_(cursor_id_storage) {
-    display_metrics_.size_in_pixels = gfx::Size(400, 300);
+    display_metrics_.bounds = gfx::Rect(0, 0, 400, 300);
     display_metrics_.device_scale_factor = 1.f;
   }
   ~TestPlatformDisplay() override {}
 
   // PlatformDisplay:
   void Init(PlatformDisplayDelegate* delegate) override {
     // It is necessary to tell the delegate about the ViewportMetrics to make
     // sure that the DisplayBinding is correctly initialized (and a root-window
     // is created).
     delegate->OnViewportMetricsChanged(ViewportMetrics(), display_metrics_);
@@ skipping 10 matching lines @@
   }
   float GetDeviceScaleFactor() override {
     return display_metrics_.device_scale_factor;
   }
   void UpdateTextInputState(const ui::TextInputState& state) override {}
   void SetImeVisibility(bool visible) override {}
   bool IsFramePending() const override { return false; }
   void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request) override {}
   int64_t GetDisplayId() const override { return 1; }
+  gfx::Rect GetBounds() const override { return display_metrics_.bounds; }
 
  private:
   ViewportMetrics display_metrics_;
 
   int32_t* cursor_id_storage_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPlatformDisplay);
 };
 
 ClientWindowId NextUnusedClientWindowId(WindowTree* tree) {
@@ skipping 449 matching lines @@
     return nullptr;
   if (!tree->AddWindow(parent_client_id, client_window_id))
     return nullptr;
   *client_id = client_window_id;
   return tree->GetWindowByClientId(client_window_id);
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui