Allow toString capability to be toggled independent of developer mode

src/core/SkMatrix.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMatrix.h"
 #include "SkFloatBits.h"
 #include "SkOnce.h"
@@ skipping 1580 matching lines @@
     }
     return sizeInMemory;
 }
 
 #ifdef SK_DEVELOPER
 void SkMatrix::dump() const {
     SkString str;
     this->toString(&str);
     SkDebugf("%s\n", str.c_str());
 }
+#endif
 
+#ifndef SK_IGNORE_TO_STRING
 void SkMatrix::toString(SkString* str) const {
     str->appendf("[%8.4f %8.4f %8.4f][%8.4f %8.4f %8.4f][%8.4f %8.4f %8.4f]",
              fMat[0], fMat[1], fMat[2], fMat[3], fMat[4], fMat[5],
              fMat[6], fMat[7], fMat[8]);
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkMatrixUtils.h"
@@ skipping 140 matching lines @@
         rotation1->fX = cos1;
         rotation1->fY = sin1;
     }
     if (NULL != rotation2) {
         rotation2->fX = cos2;
         rotation2->fY = sin2;
     }
 
     return true;
 }