Implement StreamTexture::BindTexImage.

content/common/gpu/client/gpu_channel_host.cc

Index: content/common/gpu/client/gpu_channel_host.cc
diff --git a/content/common/gpu/client/gpu_channel_host.cc b/content/common/gpu/client/gpu_channel_host.cc
index 237a1d31f10bef6786926618715d536cdcf73b9f..287f70249ad48e9e13c03373be0a8d16283aba59 100644
--- a/content/common/gpu/client/gpu_channel_host.cc
+++ b/content/common/gpu/client/gpu_channel_host.cc
@@ -61,7 +61,8 @@ GpuChannelHost::GpuChannelHost(
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager)
     : factory_(factory),
       gpu_info_(gpu_info),
-      gpu_memory_buffer_manager_(gpu_memory_buffer_manager) {
+      gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
+      command_buffer_routing_id_(0) {
   next_transfer_buffer_id_.GetNext();
   next_image_id_.GetNext();
   next_route_id_.GetNext();
@@ -235,6 +236,7 @@ CommandBufferProxyImpl* GpuChannelHost::CreateOffscreenCommandBuffer(
   CommandBufferProxyImpl* command_buffer =
       new CommandBufferProxyImpl(this, route_id);
   AddRoute(route_id, command_buffer->AsWeakPtr());
+  command_buffer_routing_id_ = route_id;
 
   AutoLock lock(context_lock_);
   proxies_[route_id] = command_buffer;
@@ -291,6 +293,7 @@ void GpuChannelHost::DestroyCommandBuffer(
 
   AutoLock lock(context_lock_);
   proxies_.erase(route_id);
+  command_buffer_routing_id_ = 0;
   if (flush_info_.flush_pending && flush_info_.route_id == route_id)
     flush_info_.flush_pending = false;
 
@@ -396,6 +399,18 @@ GpuChannelHost::~GpuChannelHost() {
 #endif
 }
 
+unsigned GpuChannelHost::CreateStreamTexture(int32 image_id) {
+  DCHECK(command_buffer_routing_id_);
+  int32 stream_id = GenerateRouteID();
+  bool succeeded = factory_->CreateStreamTexture(
+      image_id, command_buffer_routing_id_, stream_id);
+  if (!succeeded) {
+    DLOG(ERROR) << "GpuCommandBufferMsg_CreateStreamTexture returned failure";
+    return 0;
+  }
+  return stream_id;
+}
+
 GpuChannelHost::MessageFilter::MessageFilter()
     : lost_(false) {
 }