Reduce verbosity of SkGraphics::Init in default case.

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

Committed: https://code.google.com/p/skia/source/detail?r=13017

[hal.canary, 2014-01-10 13:30:51]

PTAL

[mtklein, 2014-01-10 13:53:31]

https://codereview.chromium.org/133583003/diff/1/include/utils/SkRTConf.h
File include/utils/SkRTConf.h (right):

https://codereview.chromium.org/133583003/diff/1/include/utils/SkRTConf.h#new...
include/utils/SkRTConf.h:78: int countNonDefault() const;
I don't think this matters here particularly, but in general I like to offer as
little as possible in an API, to keep as little constraint on the implementation
as possible.  Here you only need bool hasNonDefault() const.  Might want to
power it down?

[hal.canary, 2014-01-10 14:30:46]

https://codereview.chromium.org/133583003/diff/1/include/utils/SkRTConf.h
File include/utils/SkRTConf.h (right):

https://codereview.chromium.org/133583003/diff/1/include/utils/SkRTConf.h#new...
include/utils/SkRTConf.h:78: int countNonDefault() const;
On 2014/01/10 13:53:31, mtklein wrote:
> I don't think this matters here particularly, but in general I like to offer
as
> little as possible in an API, to keep as little constraint on the
implementation
> as possible.  Here you only need bool hasNonDefault() const.  Might want to
> power it down?

Done.

[mtklein, 2014-01-10 14:33:51]

lgtm

[hal.canary, 2014-01-10 14:56:28]

"Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com')"

[reed1, 2014-01-10 14:56:59]

lgtm

[hal.canary, 2014-01-10 15:00:50]

Committed patchset #3 manually as r13017 (presubmit successful).