am 302def2e: Merge changes I1dea8691,I59a2050e

* commit '302def2efe5d8cb4dec27b5c587eab6b9e6e7806':
  Polishing text style and measuring for section headers.
tree: 68b5f2ba7feec7845dae35ee7efc6b87b951bf42
  1. src/
  2. TestCommon/
  3. tests/