content: Add multi-proc surface texture support.

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index 1b58ae876f545313e9c9ecefa5d407a33e5ebdda..635543659b7ae8bb93310149d5f1c83349fee30a 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -764,6 +764,22 @@ void GpuProcessHost::DeleteImage(int client_id,
   Send(new GpuMsg_DeleteImage(client_id, image_id, sync_point));
 }
 
+void GpuProcessHost::CreateSurfaceTexture(
+    int surface_texture_id,
+    base::ProcessHandle process_handle,
+    const CreateSurfaceTextureCallback& callback) {
+  TRACE_EVENT0("gpu", "GpuProcessHost::CreateSurfaceTexture");
+
+  DCHECK(CalledOnValidThread());
+
+  if (Send(new GpuMsg_CreateSurfaceTexture(surface_texture_id,
+                                           process_handle))) {
+    create_surface_texture_requests_.push(callback);
+  } else {
+    callback.Run();
+  }
+}
+
 void GpuProcessHost::OnInitialized(bool result, const gpu::GPUInfo& gpu_info) {
   UMA_HISTOGRAM_BOOLEAN("GPU.GPUProcessInitialized", result);
   initialized_ = result;
@@ -837,6 +853,18 @@ void GpuProcessHost::OnImageCreated(const gfx::Size size) {
   callback.Run(size);
 }
 
+void GpuProcessHost::OnSurfaceTextureCreated() {
+  TRACE_EVENT0("gpu", "GpuProcessHost::OnSurfaceTextureCreated");
+
+  if (create_surface_texture_requests_.empty())
+    return;
+
+  CreateSurfaceTextureCallback callback =
+      create_surface_texture_requests_.front();
+  create_surface_texture_requests_.pop();
+  callback.Run();
+}
+
 void GpuProcessHost::OnDidCreateOffscreenContext(const GURL& url) {
   urls_with_live_offscreen_contexts_.insert(url);
 }