Refactor how we handle resources path in Tests.

gm/gm.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 using namespace skiagm;
 
-const char* GM::gResourcePath;
-
 GM::GM() {
     fMode = kGM_Mode;
     fBGColor = SK_ColorWHITE;
     fCanvasIsDeferred = false;
     fHaveCalledOnceBeforeDraw = false;
     fStarterMatrix.reset();
 }
 
 GM::~GM() {}
 
@@ skipping 35 matching lines @@
 
 void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
     SkISize size = this->getISize();
     SkRect r = SkRect::MakeWH(SkIntToScalar(size.width()),
                               SkIntToScalar(size.height()));
     SkPaint paint;
     paint.setColor(color);
     canvas->drawRect(r, paint);
 }
 
-void GM::SetResourcePath(const char* resourcePath) {
-    gResourcePath = resourcePath;
-}
-
-SkString GM::GetResourcePath() {
-    return SkString(gResourcePath);
-}
-
 // need to explicitly declare this, or we get some weird infinite loop llist
-template GMRegistry* SkTRegistry<GM*(*)(void*)>::gHead;
+template GMRegistry* GMRegistry::gHead;