fix warnings on Mac in src/gpu and include/gpu

Fix these class of warnings:
- unused functions
- unused locals
- sign mismatch
- missing function prototypes
- missing newline at end of file
- 64 to 32 bit truncation

The changes prefer to link in dead code in the debug build
with 'if (false)' than to comment it out, but trivial cases
are commented out or sometimes deleted if it appears to be
a copy/paste error.
Review URL: https://codereview.appspot.com/6296044

git-svn-id: http://skia.googlecode.com/svn/trunk@4180 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index 5342d9a4c7..23d05bc5da 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -804,7 +804,7 @@ private:
                sizeof(fPodEndMarker);
     }
 
-    static const StageMask kIllegalStageMaskBits = ~((1 << kNumStages)-1);
+    static const StageMask kIllegalStageMaskBits = ~((1U << kNumStages)-1);
     // @{ these fields can be initialized with memset to 0
     union {
         GrColor             fBlendConstant;