Using ::testing::DoAll

Without this statement, compilation failed with new googletest.

Exempt-From-Owner-Approval: Grammer fix for unit test.
Test: build
Bug: 129498355
Change-Id: I7d80377a57b85f348b0578a423edaf7aff89e097
diff --git a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
index 9b31985..28cac2e 100644
--- a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
+++ b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
@@ -54,10 +54,11 @@
 namespace {
 
 // Mock test helpers
+using ::testing::_;
+using ::testing::DoAll;
 using ::testing::Invoke;
 using ::testing::Return;
 using ::testing::SetArgPointee;
-using ::testing::_;
 
 using Transaction = SurfaceComposerClient::Transaction;