Remove openglui embedder code

runtime/embedders/openglui/common/image_cache.h

-// 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_