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

cc/resources/resource_format.h

Index: cc/resources/resource_format.h
diff --git a/cc/resources/resource_format.h b/cc/resources/resource_format.h
index 79b815fcd297c73c1b922c98b608c2397c0be87e..0675bc9673de9841fce7db9667f0ac9b50d0feab 100644
--- a/cc/resources/resource_format.h
+++ b/cc/resources/resource_format.h
@@ -31,12 +31,16 @@ enum ResourceFormat {
 };
 
 SkColorType ResourceFormatToSkColorType(ResourceFormat format);
+ResourceFormat SkColorTypeToResourceFormat(SkColorType color_type);
 
 CC_EXPORT int BitsPerPixel(ResourceFormat format);
 CC_EXPORT GLenum GLDataType(ResourceFormat format);
 CC_EXPORT GLenum GLDataFormat(ResourceFormat format);
 CC_EXPORT GLenum GLInternalFormat(ResourceFormat format);
 CC_EXPORT gfx::BufferFormat BufferFormat(ResourceFormat format);
+CC_EXPORT ResourceFormat BufferFormatToResourceFormat(gfx::BufferFormat format);
+
+bool IsResourceFormatCompressed(ResourceFormat format);
 
 }  // namespace cc