[cc] Rename all cc/ filenames to Chromium style

cc/platform_color.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
+// 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 PlatformColor_h
+#define PlatformColor_h
+
+#include "Extensions3D.h"
+#include "GraphicsContext3D.h"
+#include "SkTypes.h" 
+#include <public/WebGraphicsContext3D.h>
+
+namespace cc {
+
+class PlatformColor {
+public:
+    static GraphicsContext3D::SourceDataFormat format()
+    {
+        return SK_B32_SHIFT ? GraphicsContext3D::SourceFormatRGBA8 : GraphicsContext3D::SourceFormatBGRA8;
+    }
+
+    // Returns the most efficient texture format for this platform.
+    static GC3Denum bestTextureFormat(WebKit::WebGraphicsContext3D* context, bool supportsBGRA8888)
+    {
+        GC3Denum textureFormat = GraphicsContext3D::RGBA;
+        switch (format()) {
+        case GraphicsContext3D::SourceFormatRGBA8:
+            break;
+        case GraphicsContext3D::SourceFormatBGRA8:
+            if (supportsBGRA8888)
+                textureFormat = Extensions3D::BGRA_EXT;
+            break;
+        default:
+            ASSERT_NOT_REACHED();
+            break;
+        }
+        return textureFormat;
+    }
+
+    // Return true if the given texture format has the same component order
+    // as the color on this platform.
+    static bool sameComponentOrder(GC3Denum textureFormat)
+    {
+        switch (format()) {
+        case GraphicsContext3D::SourceFormatRGBA8:
+            return textureFormat == GraphicsContext3D::RGBA;
+        case GraphicsContext3D::SourceFormatBGRA8:
+            return textureFormat == Extensions3D::BGRA_EXT;
+        default:
+            ASSERT_NOT_REACHED();
+            return false;
+        }
+    }
+};
+
+} // namespace cc
+
+#endif