Add flag to launch two displays for mus+ash.

services/ui/ws/platform_display.h

 // Copyright 2014 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.
 
 #ifndef SERVICES_UI_WS_PLATFORM_DISPLAY_H_
 #define SERVICES_UI_WS_PLATFORM_DISPLAY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 69 matching lines @@
   virtual void SetImeVisibility(bool visible) = 0;
 
   // Returns true if a compositor frame has been submitted but not drawn yet.
   virtual bool IsFramePending() const = 0;
 
   virtual void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request) = 0;
 
   virtual int64_t GetDisplayId() const = 0;
 
+  virtual gfx::Rect GetBounds() const = 0;
+
   // Overrides factory for testing. Default (NULL) value indicates regular
   // (non-test) environment.
   static void set_factory_for_testing(PlatformDisplayFactory* factory) {
     PlatformDisplay::factory_ = factory;
   }
 
  private:
   // Static factory instance (always NULL for non-test).
   static PlatformDisplayFactory* factory_;
 };
@@ skipping 17 matching lines @@
   void ReleaseCapture() override;
   void SetCursorById(int32_t cursor) override;
   float GetDeviceScaleFactor() override;
   ::display::Display::Rotation GetRotation() override;
   void UpdateTextInputState(const ui::TextInputState& state) override;
   void SetImeVisibility(bool visible) override;
   bool IsFramePending() const override;
   void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request) override;
   int64_t GetDisplayId() const override;
+  gfx::Rect GetBounds() const override;
 
  private:
-  void UpdateMetrics(const gfx::Size& size, float device_scale_factor);
+  void UpdateMetrics(const gfx::Rect& bounds, float device_scale_factor);
 
   // ui::PlatformWindowDelegate:
   void OnBoundsChanged(const gfx::Rect& new_bounds) override;
   void OnDamageRect(const gfx::Rect& damaged_region) override;
   void DispatchEvent(ui::Event* event) override;
   void OnCloseRequest() override;
   void OnClosed() override;
   void OnWindowStateChanged(ui::PlatformWindowState new_state) override;
   void OnLostCapture() override;
   void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget,
@@ skipping 20 matching lines @@
   std::unique_ptr<ui::PlatformWindow> platform_window_;
 
   DISALLOW_COPY_AND_ASSIGN(DefaultPlatformDisplay);
 };
 
 }  // namespace ws
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_PLATFORM_DISPLAY_H_