Allow toString capability to be toggled independent of developer mode

src/effects/gradients/SkGradientShader.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 "SkGradientShaderPriv.h"
 #include "SkLinearGradient.h"
 #include "SkRadialGradient.h"
@@ skipping 636 matching lines @@
                     }
                 }
             }
         }
         info->fColorCount = fColorCount;
         info->fTileMode = fTileMode;
         info->fGradientFlags = fGradFlags;
     }
 }
 
-#ifdef SK_DEVELOPER
+#ifndef SK_IGNORE_TO_STRING
 void SkGradientShaderBase::toString(SkString* str) const {
 
     str->appendf("%d colors: ", fColorCount);
 
     for (int i = 0; i < fColorCount; ++i) {
         str->appendHex(fOrigColors[i]);
         if (i < fColorCount-1) {
             str->append(", ");
         }
     }
@@ skipping 470 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif