ozone: gpu: Add plumbing for platform-specific gpu messaging

content/gpu/gpu_child_thread.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/gpu/gpu_child_thread.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/threading/worker_pool.h"
 #include "build/build_config.h"
 #include "content/child/child_process.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/gpu/gpu_watchdog_thread.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/config/gpu_info_collector.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "ui/gl/gl_implementation.h"
 
+#if defined(USE_OZONE)
+#include "ui/ozone/gpu/gpu_platform_support.h"
+#endif
+
 namespace content {
 namespace {
 
 static base::LazyInstance<scoped_refptr<ThreadSafeSender> >
     g_thread_safe_sender = LAZY_INSTANCE_INITIALIZER;
 
 bool GpuProcessLogMessageHandler(int severity,
                                  const char* file, int line,
                                  size_t message_start,
                                  const std::string& str) {
@@ skipping 61 matching lines @@
   // process. This could result in deadlock.
   DCHECK(!msg->is_sync());
 
   return ChildThread::Send(msg);
 }
 
 bool GpuChildThread::OnControlMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuChildThread, msg)
     IPC_MESSAGE_HANDLER(GpuMsg_Initialize, OnInitialize)
+    IPC_MESSAGE_HANDLER(GpuMsg_InitializePlatformSupport,
+                        OnInitializePlatformSupport)
     IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo, OnCollectGraphicsInfo)
     IPC_MESSAGE_HANDLER(GpuMsg_GetVideoMemoryUsageStats,
                         OnGetVideoMemoryUsageStats)
     IPC_MESSAGE_HANDLER(GpuMsg_Clean, OnClean)
     IPC_MESSAGE_HANDLER(GpuMsg_Crash, OnCrash)
     IPC_MESSAGE_HANDLER(GpuMsg_Hang, OnHang)
     IPC_MESSAGE_HANDLER(GpuMsg_DisableWatchdog, OnDisableWatchdog)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ skipping 34 matching lines @@
   // Defer creation of the render thread. This is to prevent it from handling
   // IPC messages before the sandbox has been enabled and all other necessary
   // initialization has succeeded.
   gpu_channel_manager_.reset(
       new GpuChannelManager(GetRouter(),
                             watchdog_thread_.get(),
                             ChildProcess::current()->io_message_loop_proxy(),
                             ChildProcess::current()->GetShutDownEvent()));
 }
 
+void GpuChildThread::OnInitializePlatformSupport(int32 host_route_id) {

[rjkroege, 2014/06/16 21:38:49]

MessageFilter might make this cleaner. Might let you remove the #if

+#if defined(USE_OZONE)
+  ui::GpuPlatformSupport* platform_support =
+      ui::GpuPlatformSupport::Initialize();
+  int gpu_route_id = gpu_channel_manager_->GenerateRouteID();
+  gpu_channel_manager_->AddRoute(gpu_route_id, platform_support);
+  Send(new GpuHostMsg_PlatformSupportInitialized(host_route_id, gpu_route_id));
+  platform_support->OnChannelEstablished(this, host_route_id);
+#endif
+}
+
 void GpuChildThread::StopWatchdog() {
   if (watchdog_thread_.get()) {
     watchdog_thread_->Stop();
   }
 }
 
 void GpuChildThread::OnCollectGraphicsInfo() {
 #if defined(OS_WIN)
   // GPU full info collection should only happen on un-sandboxed GPU process
   // or single process/in-process gpu mode on Windows.
@@ skipping 71 matching lines @@
     // the future posting of tasks to the message loop.
     if (watchdog_thread_->message_loop())
       watchdog_thread_->PostAcknowledge();
     // Prevent rearming.
     watchdog_thread_->Stop();
   }
 }
 
 }  // namespace content