remove SK_SCALAR_IS_[FLOAT,FIXED] and assume floats

remove SK_SCALAR_IS_[FLOAT,FIXED] and assume floats

To keep the CL (slightly) managable, this does not make any changes to
existing macros (e.g. SkScalarMul). Just tackling #ifdef constructs this
time around.

BUG=
R=bsalomon@google.com, caryclark@google.com

Committed: https://code.google.com/p/skia/source/detail?r=12712

[reed1, 2013-12-17 06:14:58]

kinda hard to manually review. At least check the public headers, and we can
trust the rest to our bots :)

[caryclark, 2013-12-17 13:07:13]

lgtm

https://codereview.chromium.org/117053002/diff/1/src/core/SkCanvas.cpp
File src/core/SkCanvas.cpp (right):

https://codereview.chromium.org/117053002/diff/1/src/core/SkCanvas.cpp#newcod...
src/core/SkCanvas.cpp:1459: static inline int pinIntForScalar(int x) {
this inline is no longer called and can be deleted

[bsalomon, 2013-12-17 14:28:33]

lgtm

[reed1, 2013-12-17 16:45:22]

Committed patchset #1 manually as r12712 (presubmit successful).