Refactor how we handle resources path in Tests.

samplecode/SampleUnpremul.cpp

Index: samplecode/SampleUnpremul.cpp
diff --git a/samplecode/SampleUnpremul.cpp b/samplecode/SampleUnpremul.cpp
index c84e1d44e8b9fff1a15c131bae18e5e9ecc8317e..ab99ecb8cea084d34ff3aba2e821f222690eb7a9 100644
--- a/samplecode/SampleUnpremul.cpp
+++ b/samplecode/SampleUnpremul.cpp
@@ -6,6 +6,8 @@
  */
 
 #include "gm.h"
+
+#include "Resources.h"
 #include "SampleCode.h"
 #include "SkBlurMask.h"
 #include "SkBlurDrawLooper.h"
@@ -199,6 +201,6 @@ private:
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() {
-    return new UnpremulView(skiagm::GM::GetResourcePath());
+    return new UnpremulView(GetResourcePath());
 }
 static SkViewRegister reg(MyFactory);