[webcrypto] Fix compiler errors in WebCryptoImplTest

Also fix some changes for coding style errors reported by cpplint.py

BUG=314517

Review URL: https://codereview.chromium.org/57373004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233233 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233233
file_manager: Rename file_manager::FileManagerInstaller to file_manager::AppInstaller

Revise the class comment along the way.

BUG=284984
TEST=none
R=yoshiki@chromium.org

Review URL: https://codereview.chromium.org/61463003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233234 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233234