Allow one-copy task tile worker pool to use compressed textures.

cc/output/renderer_settings.cc

Index: cc/output/renderer_settings.cc
diff --git a/cc/output/renderer_settings.cc b/cc/output/renderer_settings.cc
index 7b182784035baf443db0c6608b85a068c8dea35c..f5e3c3a0f50708cc8189b5ef6397c71d18a0b3a3 100644
--- a/cc/output/renderer_settings.cc
+++ b/cc/output/renderer_settings.cc
@@ -7,6 +7,7 @@
 #include <limits>
 
 #include "base/logging.h"
+#include "cc/resources/platform_color.h"
 
 namespace cc {
 
@@ -21,9 +22,9 @@ RendererSettings::RendererSettings()
       delay_releasing_overlay_resources(false),
       refresh_rate(60.0),
       highp_threshold_min(0),
-      use_rgba_4444_textures(false),
       texture_id_allocation_chunk_size(64),
-      use_gpu_memory_buffer_resources(false) {}
+      use_gpu_memory_buffer_resources(false),
+      preferred_tile_format(PlatformColor::BestTextureFormat(true)) {}

[reveman, 2015/12/02 18:27:18]

nit: I find calling BestTextureFormat with supports_bgra8888=true in a bunch of
places a bit awkward. Can you add a new function instead? E.g. remove  the
argument from BestTextureFormat and add a BestSupportedTextureFormat function
that still takes an argument if we even need that now that we have
IsResourceFormatSupported?

Btw, the name should be Best(Supported)ResourceFormat and not TextureFormat. No
need to but feel free to fix that as part of touching this code if you like.

[christiank, 2015/12/03 12:57:59]

I was thinking along the same lines. Fixed.

I think it makes sense to keep BestSupportedTextureFormat since there is a
different condition for the best render buffer format
(caps.gpu.render_buffer_format_bgra8888).

 
 RendererSettings::~RendererSettings() {
 }