Add a new property to LinkedUniform struct The new property isTransformedFloat will be used by front end API to determine if we should transform 32-bit float to 16-bit float before writing to memory, and transform 16-bit float to 32-bit float after reading from memory. The property value will be passed from UsedUniform (child struct of ShaderVariable) object in UniformLinkder::getResults(). This CL is no op. Bug: angleproject:405795981 Change-Id: Ic4908712f5fa56cb657206a25d9d618b51ac6322 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6851554 Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Yuxin Hu <yuxinhu@google.com>