Reduce verbosity of SkGraphics::Init in default case.

SkGraphics::Init() now checks to see if there are any non-default
runtime configuration options before announcing that it is about
to print out the non-default runtime configuration options.

This makes the executables in tools/ less verbose.

Add SkRTConfRegistry::countNonDefault() function.

BUG=
R=mtklein@google.com, reed@google.com

Review URL: https://codereview.chromium.org/133583003

git-svn-id: http://skia.googlecode.com/svn/trunk@13017 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed