Move uncoupled code out of skia/ext/platform_device.h

skia/ext/platform_surface.h

Index: skia/ext/platform_surface.h
diff --git a/skia/ext/platform_surface.h b/skia/ext/platform_surface.h
new file mode 100644
index 0000000000000000000000000000000000000000..b0d5173c40f8929e07c716feb8123ff24dd57726
--- /dev/null
+++ b/skia/ext/platform_surface.h
@@ -0,0 +1,39 @@
+// Copyright (c) 2015 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 SKIA_EXT_PLATFORM_SURFACE_H_
+#define SKIA_EXT_PLATFORM_SURFACE_H_
+
+#include "build/build_config.h"
+
+#include "third_party/skia/include/core/SkTypes.h"
+#include "third_party/skia/include/core/SkRect.h"
+
+#if defined(USE_CAIRO)
+typedef struct _cairo cairo_t;
+typedef struct _cairo_rectangle cairo_rectangle_t;
+#elif defined(OS_MACOSX)
+typedef struct CGContext* CGContextRef;
+typedef struct CGRect CGRect;
+#endif
+
+namespace skia {
+
+#if defined(OS_WIN)
+typedef HDC PlatformSurface;
+typedef RECT PlatformRect;
+#elif defined(USE_CAIRO)
+typedef cairo_t* PlatformSurface;
+typedef cairo_rectangle_t PlatformRect;
+#elif defined(OS_MACOSX)
+typedef CGContextRef PlatformSurface;
+typedef CGRect PlatformRect;
+#else
+typedef void* PlatformSurface;
+typedef SkIRect* PlatformRect;
+#endif
+
+}  // namespace skia
+
+#endif  // SKIA_EXT_PLATFORM_SURFACE_H_