Have SkTArray state that it default-initializes.

The current comments in SkTArray lead one to believe that it is default
constructing all types. However, it is not calling the default
constructor for primitive types, it is actually default-initializing.

R=bsalomon@google.com

Review URL: https://codereview.chromium.org/208393006

git-svn-id: http://skia.googlecode.com/svn/trunk@13909 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed