Add flag to enable rendering of text using signed distance fields.

cc/output/software_renderer_unittest.cc

Index: cc/output/software_renderer_unittest.cc
diff --git a/cc/output/software_renderer_unittest.cc b/cc/output/software_renderer_unittest.cc
index a80d05275eb33eb6f9c5185e85a37aa38fbd4885..2fd6c6d5a3de2fa4908baecafd4b62a9ab443424 100644
--- a/cc/output/software_renderer_unittest.cc
+++ b/cc/output/software_renderer_unittest.cc
@@ -35,7 +35,8 @@ class SoftwareRendererTest : public testing::Test, public RendererClient {
 
     shared_bitmap_manager_.reset(new TestSharedBitmapManager());
     resource_provider_ = ResourceProvider::Create(
-        output_surface_.get(), shared_bitmap_manager_.get(), 0, false, 1);
+        output_surface_.get(), shared_bitmap_manager_.get(), 0, false, 1,
+        false);
     renderer_ = SoftwareRenderer::Create(
         this, &settings_, output_surface_.get(), resource_provider());
   }