content: Add multi-proc surface texture support.

content/browser/gpu/browser_gpu_channel_host_factory.cc

Index: content/browser/gpu/browser_gpu_channel_host_factory.cc
diff --git a/content/browser/gpu/browser_gpu_channel_host_factory.cc b/content/browser/gpu/browser_gpu_channel_host_factory.cc
index 075c8f993f5da2332a185895ee210b8e68d8155c..c2cb27881888df33fb959f652e9642995eca7494 100644
--- a/content/browser/gpu/browser_gpu_channel_host_factory.cc
+++ b/content/browser/gpu/browser_gpu_channel_host_factory.cc
@@ -393,6 +393,52 @@ scoped_ptr<gfx::GpuMemoryBuffer>
   return buffer.PassAs<gfx::GpuMemoryBuffer>();
 }
 
+void BrowserGpuChannelHostFactory::CreateSurfaceTextureOnIO(
+    int32 surface_texture_id,
+    base::ProcessHandle process_handle,
+    const CreateSurfaceTextureCallback& callback) {
+  GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
+  if (!host) {
+    SurfaceTextureCreatedOnIO(callback);
+    return;
+  }
+
+  host->CreateSurfaceTexture(
+      surface_texture_id,
+      process_handle,
+      base::Bind(&BrowserGpuChannelHostFactory::SurfaceTextureCreatedOnIO,
+                 callback));
+}
+
+// static
+void BrowserGpuChannelHostFactory::SurfaceTextureCreatedOnIO(
+    const CreateSurfaceTextureCallback& callback) {
+  BrowserThread::PostTask(
+      BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(&BrowserGpuChannelHostFactory::OnSurfaceTextureCreated,
+                 callback));
+}
+
+// static
+void BrowserGpuChannelHostFactory::OnSurfaceTextureCreated(
+    const CreateSurfaceTextureCallback& callback) {
+  callback.Run();
+}
+
+void BrowserGpuChannelHostFactory::CreateSurfaceTexture(
+    int32 surface_texture_id,
+    base::ProcessHandle process_handle,
+    const CreateSurfaceTextureCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  GetIOLoopProxy()->PostTask(FROM_HERE, base::Bind(
+        &BrowserGpuChannelHostFactory::CreateSurfaceTextureOnIO,
+        base::Unretained(this),
+        surface_texture_id,
+        process_handle,
+        callback));
+}
+
 // static
 void BrowserGpuChannelHostFactory::AddFilterOnIO(
     int host_id,