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

content/common/gpu/image_transport_surface.cc

Index: content/common/gpu/image_transport_surface.cc
diff --git a/content/common/gpu/image_transport_surface.cc b/content/common/gpu/image_transport_surface.cc
index 0ea39f50a1764bdfa4b73a7866e30703adeda66a..c06b1ccbba8e0a79bc8830303b6a55a548ae19ad 100644
--- a/content/common/gpu/image_transport_surface.cc
+++ b/content/common/gpu/image_transport_surface.cc
@@ -222,7 +222,8 @@ void ImageTransportHelper::Resize(gfx::Size size) {
   // 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);
@@ -232,8 +233,10 @@ void ImageTransportHelper::Resize(gfx::Size size) {
 #endif
 
 #if defined(OS_WIN)
-  Decoder()->MakeCurrent();
-  SetSwapInterval(Decoder()->GetGLContext());
+  if (handle_ != NULL) {
+    Decoder()->MakeCurrent();
+    SetSwapInterval(Decoder()->GetGLContext());
+  }
 #endif
 }