Remove all code related to NaCl

include/views/SkOSWindow_NaCl.h

-/*
- * Copyright 2012 Skia
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkOSWindow_NaCl_DEFINED
-#define SkOSWindow_NaCl_DEFINED
-
-#include "SkWindow.h"
-
-class SkOSWindow : public SkWindow {
-public:
-    SkOSWindow(void*) {}
-    ~SkOSWindow() {}
-
-    enum SkBackEndTypes {
-        kNone_BackEndType,
-        kNativeGL_BackEndType,
-    };
-
-    bool attach(SkBackEndTypes /* attachType */, int /* msaaSampleCount */, AttachmentInfo* info) {
-        info->fSampleCount = 0;
-        info->fStencilBits = 0;
-        return true;
-    }
-    void detach() {}
-    void present() {}
-
-    virtual void onPDFSaved(const char title[], const char desc[],
-        const char path[]);
-
-protected:
-    // overrides from SkWindow
-    virtual void onHandleInval(const SkIRect&);
-    virtual void onSetTitle(const char title[]);
-
-private:
-    typedef SkWindow INHERITED;
-};
-
-#endif