Fix gyp files to allow ninja to build 64 bit on Mac.

src/gpu/gl/GrGLSL.h

Index: src/gpu/gl/GrGLSL.h
diff --git a/src/gpu/gl/GrGLSL.h b/src/gpu/gl/GrGLSL.h
index 869b0e180c44d0fd2a2ff68e556a23a6c8eba02a..883cc9b41accd7b342ef21076c11255ce66acd08 100644
--- a/src/gpu/gl/GrGLSL.h
+++ b/src/gpu/gl/GrGLSL.h
@@ -54,7 +54,7 @@ static inline int GrSLTypeToVecLength(GrSLType type) {
         1, // kMat44f_GrSLType
         1, // kSampler2D_GrSLType
     };
-    GrAssert((size_t) type < GR_ARRAY_COUNT(kVecLengths));
+    GR_STATIC_ASSERT(kGrSLTypeCount == GR_ARRAY_COUNT(kVecLengths));
     return kVecLengths[type];
 }