9896 Capture stderr for ninja command (cla: yes)

9898 v1.7.8 hotfixes (cla: yes)

9901 Handle decompressed images in InstantiateImageCodec (cla: yes)

9903 Revert to using fml::StringView instead of std::string_view (cla: yes)

9905 Respect EXIF information while decompressing images. (cla: yes)

9906 Update libcxx & libcxxabi to HEAD in prep for compiler upgrade. (cla: yes)

9909 Roll src/third_party/dart 6bf1f8e280..63120303a7 (4 commits) (cla: yes)

9919 Removed unused method. (cla: yes)

9920 Fix caching of Locale.toString (cla: yes)