More clang warning fixes.

Mostly unused functions and variables removed.

BUG=None
TEST=ninja -C out/Debug most
     ninja -C out/Release most

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

Author: tfarina@chromium.org

Review URL: https://codereview.chromium.org/27933002

git-svn-id: http://skia.googlecode.com/svn/trunk@11884 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index ad6e061..2292929 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -230,9 +230,12 @@
     devBounds->growToInclude(pt.fX, pt.fY);
 }
 
+#ifdef SK_DEBUG
 static inline bool contains_inclusive(const SkRect& rect, const SkPoint& p) {
     return p.fX >= rect.fLeft && p.fX <= rect.fRight && p.fY >= rect.fTop && p.fY <= rect.fBottom;
 }
+#endif
+
 static inline void add_quad_segment(const SkPoint pts[3],
                                     SegmentArray* segments,
                                     SkRect* devBounds) {