Choose largest DrawQuad type, no longer dependent on compiler flag

Use template to choose between RenderPassDrawQuad and
StreamVideoDrawQuad for LargestDrawQuad.

BUG=429552

Review URL: https://codereview.chromium.org/698053002

Cr-Commit-Position: refs/heads/master@{#302833}

diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 32d6aed..a578b61c 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn

@@ -293,6 +293,7 @@
     "quads/io_surface_draw_quad.cc",
     "quads/io_surface_draw_quad.h",
     "quads/largest_draw_quad.h",
+    "quads/largest_draw_quad.cc",
     "quads/list_container.cc",
     "quads/list_container.h",
     "quads/picture_draw_quad.cc",