Don't release/make-current the non-top level texture

content/common/gpu/image_transport_surface.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.
 
 #if defined(ENABLE_GPU)
 
 #include "content/common/gpu/image_transport_surface.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 204 matching lines @@
 void ImageTransportHelper::OnResizeViewACK() {
   surface_->OnResizeViewACK();
 }
 
 void ImageTransportHelper::Resize(gfx::Size size) {
   // On windows, the surface is recreated and, in case the newly allocated
   // surface happens to have the same address, it should be invalidated on the
   // decoder so that future calls to MakeCurrent do not early out on the
   // assumption that neither the context or surface have actually changed.
 #if defined(OS_WIN)
-  Decoder()->ReleaseCurrent();
+  if (handle_ != NULL)
+    Decoder()->ReleaseCurrent();
 #endif
 
   surface_->OnResize(size);
 
 #if defined(OS_ANDROID)
   manager_->gpu_memory_manager()->ScheduleManage(true);
 #endif
 
 #if defined(OS_WIN)
-  Decoder()->MakeCurrent();
-  SetSwapInterval(Decoder()->GetGLContext());
+  if (handle_ != NULL) {
+    Decoder()->MakeCurrent();
+    SetSwapInterval(Decoder()->GetGLContext());
+  }
 #endif
 }
 
 PassThroughImageTransportSurface::PassThroughImageTransportSurface(
     GpuChannelManager* manager,
     GpuCommandBufferStub* stub,
     gfx::GLSurface* surface,
     bool transport)
     : GLSurfaceAdapter(surface),
       transport_(transport),
@@ skipping 80 matching lines @@
   }
 }
 
 gfx::Size PassThroughImageTransportSurface::GetSize() {
   return GLSurfaceAdapter::GetSize();
 }
 
 PassThroughImageTransportSurface::~PassThroughImageTransportSurface() {}
 
 #endif  // defined(ENABLE_GPU)