Move code to dump GrSurface as a png to helper files

src/gpu/GrSurface.cpp

Index: src/gpu/GrSurface.cpp
diff --git a/src/gpu/GrSurface.cpp b/src/gpu/GrSurface.cpp
index 0aa5f681ab2d1a07657e9814b77ff20b039d9766..c2163770912216c5170a209c00e02e1436d6012f 100644
--- a/src/gpu/GrSurface.cpp
+++ b/src/gpu/GrSurface.cpp
@@ -10,8 +10,6 @@
 
 #include "SkBitmap.h"
 #include "SkGr.h"
-#include "SkImageEncoder.h"
-#include <stdio.h>
 
 bool GrSurface::writePixels(int left, int top, int width, int height,
                             GrPixelConfig config, const void* buffer, size_t rowBytes,
@@ -49,32 +47,6 @@ SkImageInfo GrSurface::info() const {
     return SkImageInfo::Make(this->width(), this->height(), colorType, kPremul_SkAlphaType);
 }
 
-// TODO: This should probably be a non-member helper function. It might only be needed in
-// debug or developer builds.
-bool GrSurface::savePixels(const char* filename) {
-    SkBitmap bm;
-    if (!bm.tryAllocPixels(SkImageInfo::MakeN32Premul(this->width(), this->height()))) {
-        return false;
-    }
-
-    bool result = this->readPixels(0, 0, this->width(), this->height(), kSkia8888_GrPixelConfig,
-                                   bm.getPixels());
-    if (!result) {
-        SkDebugf("------ failed to read pixels for %s\n", filename);
-        return false;
-    }
-
-    // remove any previous version of this file
-    remove(filename);
-
-    if (!SkImageEncoder::EncodeFile(filename, bm, SkImageEncoder::kPNG_Type, 100)) {
-        SkDebugf("------ failed to encode %s\n", filename);
-        remove(filename);   // remove any partial file
-        return false;
-    }
-
-    return true;
-}
 
 void GrSurface::flushWrites() {
     if (!this->wasDestroyed()) {