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

cc/resources/picture_layer_tiling_perftest.cc

Index: cc/resources/picture_layer_tiling_perftest.cc
diff --git a/cc/resources/picture_layer_tiling_perftest.cc b/cc/resources/picture_layer_tiling_perftest.cc
index 4db7fe6e62221302cb226b5038059be7f371df29..349c2c4a354b0c2ccb0f45383468537281e619e6 100644
--- a/cc/resources/picture_layer_tiling_perftest.cc
+++ b/cc/resources/picture_layer_tiling_perftest.cc
@@ -35,13 +35,10 @@ class PictureLayerTilingPerfTest : public testing::Test {
     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).Pass();
+    resource_provider_ =
+        ResourceProvider::Create(output_surface_.get(),
+                                 shared_bitmap_manager_.get(), NULL, NULL, 0,
+                                 false, false, 1).Pass();
   }
 
   void SetUp() override {