add gm: colorwheel

tools/Resources.cpp

Index: tools/Resources.cpp
diff --git a/tools/Resources.cpp b/tools/Resources.cpp
index 606c5c4968c52fcb7544ba47fc5fd0ba1285269d..50c08922fa1acc66f61960ce45eb8057ee84272e 100644
--- a/tools/Resources.cpp
+++ b/tools/Resources.cpp
@@ -6,8 +6,10 @@
  */
 
 #include "Resources.h"
-
+#include "SkBitmap.h"
 #include "SkCommandLineFlags.h"
+#include "SkData.h"
+#include "SkDecodingImageGenerator.h"
 #include "SkOSFile.h"
 
 DEFINE_string2(resourcePath, i, "resources", "Directory with test resources: images, fonts, etc.");
@@ -19,3 +21,12 @@ SkString GetResourcePath(const char* resource) {
 void SetResourcePath(const char* resource) {
     FLAGS_resourcePath.set(0, resource);
 }
+
+bool GetResourceAsBitmap(const char* resource, SkBitmap* dst) {
+    SkString resourcePath = GetResourcePath(resource);
+    SkAutoTUnref<SkData> resourceData(
+            SkData::NewFromFileName(resourcePath.c_str()));
+    return resourceData && SkInstallDiscardablePixelRef(
+            SkDecodingImageGenerator::Create(
+                    resourceData, SkDecodingImageGenerator::Options()), dst);
+}