cc: Allocate resources on worker context.

cc/resources/resource_format.cc

Index: cc/resources/resource_format.cc
diff --git a/cc/resources/resource_format.cc b/cc/resources/resource_format.cc
index e159f15ec2416766b9409b09bb78334d18d6de4b..65dfdf18fabcf148fcda95dd8f37b1a8f9f4e421 100644
--- a/cc/resources/resource_format.cc
+++ b/cc/resources/resource_format.cc
@@ -126,6 +126,23 @@ gfx::BufferFormat BufferFormat(ResourceFormat format) {
   return gfx::BufferFormat::RGBA_8888;
 }
 
+GrPixelConfig ToGrPixelConfig(ResourceFormat format) {
+  switch (format) {
+    case RGBA_8888:
+      return kRGBA_8888_GrPixelConfig;
+    case BGRA_8888:
+      return kBGRA_8888_GrPixelConfig;
+    case RGBA_4444:
+      return kRGBA_4444_GrPixelConfig;
+    case RGBA_F16:
+      return kRGBA_half_GrPixelConfig;
+    default:
+      break;
+  }
+  DCHECK(false) << "Unsupported resource format.";
+  return kSkia8888_GrPixelConfig;
+}
+
 bool IsResourceFormatCompressed(ResourceFormat format) {
   return format == ETC1;
 }