Enable RenderEngine blur testing on more devices.

Test: atest renderengine_test
Bug: 176903027
Change-Id: I85e3a561548506bd9cab1a6c8f7e15c47fbff960
diff --git a/libs/renderengine/threaded/RenderEngineThreaded.cpp b/libs/renderengine/threaded/RenderEngineThreaded.cpp
index 3b97f56..f448135 100644
--- a/libs/renderengine/threaded/RenderEngineThreaded.cpp
+++ b/libs/renderengine/threaded/RenderEngineThreaded.cpp
@@ -315,6 +315,21 @@
     return resultFuture.get();
 }
 
+bool RenderEngineThreaded::supportsBackgroundBlur() {
+    std::promise<bool> resultPromise;
+    std::future<bool> resultFuture = resultPromise.get_future();
+    {
+        std::lock_guard lock(mThreadMutex);
+        mFunctionCalls.push([&resultPromise](renderengine::RenderEngine& instance) {
+            ATRACE_NAME("REThreaded::supportsBackgroundBlur");
+            bool returnValue = instance.supportsBackgroundBlur();
+            resultPromise.set_value(returnValue);
+        });
+    }
+    mCondition.notify_one();
+    return resultFuture.get();
+}
+
 } // namespace threaded
 } // namespace renderengine
 } // namespace android