Changed GetTextureFormatInfo to use static switch BUG=angleproject:1160 The find of the map table in GetTextureFormatInfo is showing up as a hotspot in draw call perf benchmark. Switching the map into a static switch should make it more efficient. Other tables that only GetTextureFormatInfo uses is also converted into static switching instead of maps for performance. Other tables include swizzle_format_table and load_functions_table which are both only used by GetTextureFormatInfo to generate the TextureFormat for a given internalFormat and d3d device caps. The static switches for each table is generated using a python script named gen_*.py. The data for each table is stored in JSON files. This makes it more flexible for additions and deletions. Change-Id: I0f40fcc2a215c85661863ea225891071cb2f2c71 Reviewed-on: https://chromium-review.googlesource.com/301770 Reviewed-by: Zhenyao Mo <zmo@chromium.org> Tryjob-Request: Dian Xiang <dianx@google.com> Tested-by: Dian Xiang <dianx@google.com> Tryjob-Request: Jamie Madill <jmadill@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>