Revert "Delete CC."

cc/resources/platform_color.h

+// Copyright 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_RESOURCES_PLATFORM_COLOR_H_
+#define CC_RESOURCES_PLATFORM_COLOR_H_
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "cc/resources/resource_format.h"
+#include "third_party/skia/include/core/SkTypes.h"
+
+namespace cc {
+
+class PlatformColor {
+ public:
+  enum SourceDataFormat {
+    SOURCE_FORMAT_RGBA8,
+    SOURCE_FORMAT_BGRA8
+  };
+
+  static SourceDataFormat Format() {
+    return SK_B32_SHIFT ? SOURCE_FORMAT_RGBA8 : SOURCE_FORMAT_BGRA8;
+  }
+
+  // Returns the most efficient texture format for this platform.
+  static ResourceFormat BestTextureFormat(bool supports_bgra8888) {
+    switch (Format()) {
+      case SOURCE_FORMAT_BGRA8:
+        return (supports_bgra8888) ? BGRA_8888 : RGBA_8888;
+      case SOURCE_FORMAT_RGBA8:
+        return RGBA_8888;
+    }
+    NOTREACHED();
+    return RGBA_8888;
+  }
+
+  // Return true if the given texture format has the same component order
+  // as the color on this platform.
+  static bool SameComponentOrder(ResourceFormat format) {
+    switch (Format()) {
+      case SOURCE_FORMAT_RGBA8:
+        return format == RGBA_8888 || format == RGBA_4444;
+      case SOURCE_FORMAT_BGRA8:
+        return format == BGRA_8888 || format == RGBA_4444;
+    }
+    NOTREACHED();
+    return false;
+  }
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformColor);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_PLATFORM_COLOR_H_