Revert of Add compositor support for half-float RGBA buffers and textures

cc/output/direct_renderer.cc

Index: cc/output/direct_renderer.cc
diff --git a/cc/output/direct_renderer.cc b/cc/output/direct_renderer.cc
index cd4bfa5006e9eb30ab850e1dcd83f1d5b9e41ff8..bc2b1cb782d2fe90b45a103924f0f1fcabc54393 100644
--- a/cc/output/direct_renderer.cc
+++ b/cc/output/direct_renderer.cc
@@ -609,9 +609,9 @@
   size.Enlarge(enlarge_pass_texture_amount_.width(),
                enlarge_pass_texture_amount_.height());
   if (!texture->id()) {
-    texture->Allocate(size,
-                      ResourceProvider::TEXTURE_HINT_IMMUTABLE_FRAMEBUFFER,
-                      BackbufferFormat(), frame->device_color_space);
+    texture->Allocate(
+        size, ResourceProvider::TEXTURE_HINT_IMMUTABLE_FRAMEBUFFER,
+        resource_provider_->best_texture_format(), frame->device_color_space);
   }
   DCHECK(texture->id());