cc: Adding support for RGBA_4444 tile textures

cc/layers/texture_layer_impl.cc

Index: cc/layers/texture_layer_impl.cc
diff --git a/cc/layers/texture_layer_impl.cc b/cc/layers/texture_layer_impl.cc
index 851bf9a145b180431f604261739349eeb7dddfc6..35cfc309455f59b93f2474641c55b1fedf8fd466 100644
--- a/cc/layers/texture_layer_impl.cc
+++ b/cc/layers/texture_layer_impl.cc
@@ -4,6 +4,8 @@
 
 #include "cc/layers/texture_layer_impl.h"
 
+#include <vector>

[vangelis, 2013/09/11 06:11:37]

Is this new include needed? 

[kaanb, 2013/09/12 07:53:44]

include-what-you-use presubmit script asked me to add it.

[vangelis, 2013/09/12 16:41:56]

Hmm... Maybe from some previous incarnation of the code?  I'm not seeing any new
<vector> stuff in your diff.

[kaanb, 2013/09/13 00:11:08]

vector is being used in line 116. I think the presubmit started enforcing the
include-what-you-use after that code was added.

+
 #include "base/strings/stringprintf.h"
 #include "cc/layers/quad_sink.h"
 #include "cc/output/renderer.h"
@@ -101,9 +103,13 @@ bool TextureLayerImpl::WillDraw(DrawMode draw_mode,
         texture_copy_->Free();
 
       if (!texture_copy_->id()) {
+        GLenum best_texture_format = resource_provider->best_texture_format();
         texture_copy_->Allocate(texture_mailbox_.shared_memory_size(),
-                                resource_provider->best_texture_format(),
-                                ResourceProvider::TextureUsageAny);
+                                best_texture_format,
+                                ResourceProvider::TextureUsageAny,
+                                best_texture_format == GL_RGBA ?
+                                ResourceProvider::RGBA_8888 :
+                                ResourceProvider::RGBA_4444);
       }
 
       if (texture_copy_->id()) {