Reland of Android: support multiple displays on C++ side

content/browser/renderer_host/render_widget_host_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
 
@@ skipping 22 matching lines @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/display/screen.h"
 #include "ui/events/blink/web_input_event_traits.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/canvas.h"
 
 #if defined(OS_ANDROID)
 #include "content/browser/renderer_host/context_provider_factory_impl_android.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/test/mock_gpu_channel_establish_factory.h"
+#include "ui/android/screen_android.h"
 #endif
 
 #if defined(USE_AURA) || defined(OS_MACOSX)
 #include "content/browser/compositor/test/no_transport_image_transport_factory.h"
 #endif
 
 #if defined(USE_AURA)
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 #include "content/browser/renderer_host/ui_events_helper.h"
 #include "ui/aura/test/test_screen.h"
@@ skipping 416 matching lines @@
     process_ = new RenderWidgetHostProcess(browser_context_.get());
 #if defined(USE_AURA) || defined(OS_MACOSX)
     ImageTransportFactory::InitializeForUnitTests(
         std::unique_ptr<ImageTransportFactory>(
             new NoTransportImageTransportFactory));
 #endif
 #if defined(OS_ANDROID)
     ContextProviderFactoryImpl::Initialize(&gpu_channel_factory_);
     ui::ContextProviderFactory::SetInstance(
         ContextProviderFactoryImpl::GetInstance());
+    ui::SetScreenAndroid();  // calls display::Screen::SetScreenInstance().
 #endif
 #if defined(USE_AURA)
     screen_.reset(aura::TestScreen::Create(gfx::Size()));
     display::Screen::SetScreenInstance(screen_.get());
 #endif
     host_.reset(new MockRenderWidgetHost(delegate_.get(), process_,
                                          process_->GetNextRoutingID()));
     view_.reset(new TestView(host_.get()));
     ConfigureView(view_.get());
     host_->SetView(view_.get());
@@ skipping 10 matching lines @@
     browser_context_.reset();
 
 #if defined(USE_AURA)
     display::Screen::SetScreenInstance(nullptr);
     screen_.reset();
 #endif
 #if defined(USE_AURA) || defined(OS_MACOSX)
     ImageTransportFactory::Terminate();
 #endif
 #if defined(OS_ANDROID)
+    display::Screen::SetScreenInstance(nullptr);
     ui::ContextProviderFactory::SetInstance(nullptr);
     ContextProviderFactoryImpl::Terminate();
 #endif
 
     // Process all pending tasks to avoid leaks.
     base::RunLoop().RunUntilIdle();
   }
 
   void SetInitialRenderSizeParams() {
     ResizeParams render_size_params;
@@ skipping 1193 matching lines @@
                                       ui::LatencyInfo());
 
 
   // Tests RWHI::ForwardWheelEventWithLatencyInfo().
   SimulateWheelEventWithLatencyInfo(-5, 0, 0, true, ui::LatencyInfo());
 
   ASSERT_FALSE(host_->input_router()->HasPendingEvents());
 }
 
 }  // namespace content