Add Mojo API for Blink hit testing

content/renderer/render_thread_impl.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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 93 matching lines @@
 #include "content/renderer/dom_storage/dom_storage_dispatcher.h"
 #include "content/renderer/dom_storage/webstoragearea_impl.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/effective_connection_type_helper.h"
 #include "content/renderer/gpu/compositor_external_begin_frame_source.h"
 #include "content/renderer/gpu/compositor_forwarding_message_filter.h"
 #include "content/renderer/gpu/frame_swap_message_queue.h"
 #include "content/renderer/input/input_event_filter.h"
 #include "content/renderer/input/input_handler_manager.h"
 #include "content/renderer/input/main_thread_input_event_filter.h"
+#include "content/renderer/input/target_frame_for_input_impl.h"
 #include "content/renderer/media/audio_input_message_filter.h"
 #include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/media/audio_renderer_mixer_manager.h"
 #include "content/renderer/media/gpu/gpu_video_accelerator_factories_impl.h"
 #include "content/renderer/media/media_stream_center.h"
 #include "content/renderer/media/midi_message_filter.h"
 #include "content/renderer/media/render_media_client.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/net_info_helper.h"
 #include "content/renderer/p2p/socket_dispatcher.h"
@@ skipping 1831 matching lines @@
   }
 #endif
 
   viz::mojom::CompositorFrameSinkPtrInfo sink_info;
   viz::mojom::CompositorFrameSinkRequest sink_request =
       mojo::MakeRequest(&sink_info);
   viz::mojom::CompositorFrameSinkClientPtr client;
   viz::mojom::CompositorFrameSinkClientRequest client_request =
       mojo::MakeRequest(&client);
 
+  viz::mojom::TargetFrameForInputDelegatePtr hit_test;
+  viz::mojom::TargetFrameForInputDelegateRequest hit_test_request =
+      mojo::MakeRequest(&hit_test);
+
   if (command_line.HasSwitch(switches::kEnableVulkan)) {
     scoped_refptr<cc::VulkanContextProvider> vulkan_context_provider =
         cc::VulkanInProcessContextProvider::Create();
     if (vulkan_context_provider) {
       DCHECK(!layout_test_mode());
       frame_sink_provider_->CreateForWidget(routing_id, std::move(sink_request),
-                                            std::move(client));
+                                            std::move(client),
+                                            std::move(hit_test));
       callback.Run(base::MakeUnique<viz::ClientLayerTreeFrameSink>(
           std::move(vulkan_context_provider),
           std::move(synthetic_begin_frame_source), std::move(sink_info),
           std::move(client_request),
           base::MakeUnique<RendererLocalSurfaceIdProvider>(),
           false /* enable_surface_synchroninzation */));
       return;
     }
   }
 
   // Create a gpu process channel and verify we want to use GPU compositing
   // before creating any context providers.
   scoped_refptr<gpu::GpuChannelHost> gpu_channel_host;
   if (!use_software) {
     gpu_channel_host = EstablishGpuChannelSync();
     if (!gpu_channel_host) {
       // Cause the compositor to wait and try again.
       callback.Run(nullptr);
       return;
     }
     // We may get a valid channel, but with a software renderer. In that case,
     // disable GPU compositing.
     if (gpu_channel_host->gpu_info().software_rendering)
       use_software = true;
   }
 
   if (use_software) {
     DCHECK(!layout_test_mode());
     frame_sink_provider_->CreateForWidget(routing_id, std::move(sink_request),
-                                          std::move(client));
+                                          std::move(client),
+                                          std::move(hit_test));
     callback.Run(base::MakeUnique<viz::ClientLayerTreeFrameSink>(
         nullptr, nullptr, nullptr, shared_bitmap_manager(),
         std::move(synthetic_begin_frame_source), std::move(sink_info),
         std::move(client_request),
         base::MakeUnique<RendererLocalSurfaceIdProvider>(),
         false /* enable_surface_synchroninzation */));
     return;
   }
 
   scoped_refptr<ui::ContextProviderCommandBuffer> worker_context_provider =
@@ skipping 53 matching lines @@
     callback.Run(base::MakeUnique<SynchronousLayerTreeFrameSink>(
         std::move(context_provider), std::move(worker_context_provider),
         GetGpuMemoryBufferManager(), shared_bitmap_manager(), routing_id,
         g_next_layer_tree_frame_sink_id++, std::move(begin_frame_source),
         sync_compositor_message_filter_.get(),
         std::move(frame_swap_message_queue)));
     return;
   }
 #endif
   frame_sink_provider_->CreateForWidget(routing_id, std::move(sink_request),
-                                        std::move(client));
+                                        std::move(client), std::move(hit_test));
   callback.Run(base::MakeUnique<viz::ClientLayerTreeFrameSink>(
       std::move(context_provider), std::move(worker_context_provider),
       GetGpuMemoryBufferManager(), nullptr,
       std::move(synthetic_begin_frame_source), std::move(sink_info),
       std::move(client_request),
       base::MakeUnique<RendererLocalSurfaceIdProvider>(),
       false /* enable_surface_synchroninzation */));
 }
 
 AssociatedInterfaceRegistry*
@@ skipping 437 matching lines @@
   }
 }
 
 void RenderThreadImpl::OnRendererInterfaceRequest(
     mojom::RendererAssociatedRequest request) {
   DCHECK(!renderer_binding_.is_bound());
   renderer_binding_.Bind(std::move(request));
 }
 
 }  // namespace content