Various OpenGLUI changes:

runtime/embedders/openglui/common/image_cache.h

Index: runtime/embedders/openglui/common/image_cache.h
===================================================================
--- runtime/embedders/openglui/common/image_cache.h	(revision 0)
+++ runtime/embedders/openglui/common/image_cache.h	(revision 0)
@@ -0,0 +1,58 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef EMBEDDERS_OPENGLUI_COMMON_IMAGE_CACHE_H_
+#define EMBEDDERS_OPENGLUI_COMMON_IMAGE_CACHE_H_
+
+#include <map>
+#include <string>
+#include "embedders/openglui/common/log.h"
+#include "embedders/openglui/common/opengl.h"
+#include "embedders/openglui/common/support.h"
+
+class ImageCache {
+ public:
+  static void Init(const char *resource_path) {
+    if (instance_ == NULL) {
+      instance_ = new ImageCache(resource_path);
+    }
+  }
+
+  inline static const SkBitmap* GetImage(const char* src_url) {
+    if (instance_ == NULL) {
+      fprintf(stderr, "GetImage called with no instance_\n");
+      return NULL;
+    }
+    return instance_->GetImage_(src_url);
+  }
+
+  inline static int GetWidth(const char* src_url) {
+    if (instance_ == NULL) {
+      fprintf(stderr, "GetWidth called with no instance_\n");
+      return NULL;
+    }
+    return instance_->GetWidth_(src_url);
+  }
+
+  inline static int GetHeight(const char* src_url) {
+    if (instance_ == NULL) {
+      fprintf(stderr, "GetHeight called with no instance_\n");
+      return NULL;
+    }
+    return instance_->GetHeight_(src_url);
+  }
+
+ private:
+  explicit ImageCache(const char* resource_path);
+  SkBitmap* Load(const char* src_url);
+  const SkBitmap* GetImage_(const char* src_url);
+  int GetWidth_(const char* src_url);
+  int GetHeight_(const char* src_url);
+
+  std::map<std::string, SkBitmap*> images;
+  const char* resource_path_;
+  static ImageCache* instance_;
+};
+
+#endif  // EMBEDDERS_OPENGLUI_COMMON_IMAGE_CACHE_H_