During image destroy, delete textures only if we have a GL context.

gpu/command_buffer/service/context_group.cc

Index: gpu/command_buffer/service/context_group.cc
diff --git a/gpu/command_buffer/service/context_group.cc b/gpu/command_buffer/service/context_group.cc
index ba0437bfd4e389158b767c2c1398b41c33eb4d55..a2b72afbd9d4ee522c32488e42f84da8ed3218d3 100644
--- a/gpu/command_buffer/service/context_group.cc
+++ b/gpu/command_buffer/service/context_group.cc
@@ -324,6 +324,11 @@ void ContextGroup::Destroy(GLES2Decoder* decoder, bool have_context) {
     shader_manager_.reset();
   }
 
+  if (image_manager_) {
+    image_manager_->Destroy(have_context);

[reveman, 2014/06/03 15:57:54]

How is this not causing images that belong to another context group to be
destroyed?

[sohanjg, 2014/06/04 06:39:02]

Removed the destroy code and the optional creation part.

+    image_manager_ = NULL;
+  }
+
   memory_tracker_ = NULL;
 }