(not for commit) Simplified multi-threaded Ganesh with lock on Flush only.

cc/resources/prioritized_resource_unittest.cc

Index: cc/resources/prioritized_resource_unittest.cc
diff --git a/cc/resources/prioritized_resource_unittest.cc b/cc/resources/prioritized_resource_unittest.cc
index f08af8b752e48479690e2be73a704f6e7ea77073..e79ce5a5836e90555aacd209bf4b981fca41a532 100644
--- a/cc/resources/prioritized_resource_unittest.cc
+++ b/cc/resources/prioritized_resource_unittest.cc
@@ -28,13 +28,9 @@ class PrioritizedResourceTest : public testing::Test {
     DebugScopedSetImplThread impl_thread(&proxy_);
     CHECK(output_surface_->BindToClient(&output_surface_client_));
     shared_bitmap_manager_.reset(new TestSharedBitmapManager());
-    resource_provider_ = ResourceProvider::Create(output_surface_.get(),
-                                                  shared_bitmap_manager_.get(),
-                                                  NULL,
-                                                  NULL,
-                                                  0,
-                                                  false,
-                                                  1);
+    resource_provider_ = ResourceProvider::Create(
+        output_surface_.get(), shared_bitmap_manager_.get(), NULL, NULL, 0,
+        false, false, 1);
   }
 
   ~PrioritizedResourceTest() override {