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

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 74864cbd35062f711a54fdf7adeb45f8e7d78f32..f09ab3e48c3f62c7817a19c513e14e95cb07e6fc 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -19,6 +19,10 @@
 #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 {
 
@@ -100,6 +104,8 @@ 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)
@@ -154,6 +160,17 @@ void GpuChildThread::OnInitialize() {
                             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();