Fix crash caused by concurrent access to framebuffer_combo_complete_map_.

gpu/gles2_conform_support/egl/display.cc

Index: gpu/gles2_conform_support/egl/display.cc
diff --git a/gpu/gles2_conform_support/egl/display.cc b/gpu/gles2_conform_support/egl/display.cc
index dce6599acf0d7d552076cc3cc8c281d9ebb4efcb..59e72ea2e3c9343b021043ba54b8bd1f9e1c87d1 100644
--- a/gpu/gles2_conform_support/egl/display.cc
+++ b/gpu/gles2_conform_support/egl/display.cc
@@ -116,14 +116,9 @@ EGLSurface Display::CreateWindowSurface(EGLConfig config,
   if (!command_buffer->Initialize())
     return NULL;
 
-  scoped_refptr<gpu::gles2::ContextGroup> group(
-      new gpu::gles2::ContextGroup(NULL,
-                                   NULL,
-                                   new gpu::gles2::ShaderTranslatorCache,
-                                   NULL,
-                                   NULL,
-                                   NULL,
-                                   true));
+  scoped_refptr<gpu::gles2::ContextGroup> group(new gpu::gles2::ContextGroup(
+      NULL, NULL, new gpu::gles2::ShaderTranslatorCache,
+      new gpu::gles2::FramebufferCompletenessCache, NULL, NULL, NULL, true));
 
   decoder_.reset(gpu::gles2::GLES2Decoder::Create(group.get()));
   if (!decoder_.get())