SampleApp: remove SkWindow::onPDFSaved, it does not work

include/views/SkWindow.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkWindow_DEFINED
 #define SkWindow_DEFINED
 
@@ skipping 54 matching lines @@
     const char* getTitle() const { return fTitle.c_str(); }
     void    setTitle(const char title[]);
 
     const SkMatrix& getMatrix() const { return fMatrix; }
     void    setMatrix(const SkMatrix&);
     void    preConcat(const SkMatrix&);
     void    postConcat(const SkMatrix&);
 
     virtual SkSurface* createSurface();
 
-    virtual void onPDFSaved(const char title[], const char desc[],
-        const char path[]) {}
-
 protected:
     virtual bool onEvent(const SkEvent&);
     virtual bool onDispatchClick(int x, int y, Click::State, void* owner, unsigned modi);
     // called if part of our bitmap is invalidated
     virtual void onHandleInval(const SkIRect&);
     virtual bool onHandleChar(SkUnichar);
     virtual bool onHandleKey(SkKey);
     virtual bool onHandleKeyUp(SkKey);
     virtual void onAddMenu(const SkOSMenu*) {};
     virtual void onUpdateMenu(const SkOSMenu*) {};
@@ skipping 38 matching lines @@
     #include "SkOSWindow_Win.h"
 #elif defined(SK_BUILD_FOR_ANDROID)
     #include "SkOSWindow_Android.h"
 #elif defined(SK_BUILD_FOR_UNIX)
     #include "SkOSWindow_Unix.h"
 #elif defined(SK_BUILD_FOR_IOS)
     #include "SkOSWindow_iOS.h"
 #endif
 
 #endif