Convert resources to take an instance key instead of an Instance*.

ppapi/cpp/private/flash.h

 // Copyright (c) 2012 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 PPAPI_CPP_PRIVATE_FLASH_H_
 #define PPAPI_CPP_PRIVATE_FLASH_H_
 
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
 
 struct PP_Point;
 
 namespace pp {
 
 class FontDescription_Dev;
 class ImageData;
-class Instance;
+class InstanceHandle;
 class Module;
 class Point;
 class Rect;
 class URLRequestInfo;
 class Var;
 
 namespace flash {
 
 class Flash {
  public:
   // Returns true if the required interface is available.
   static bool IsAvailable();
 
-  static void SetInstanceAlwaysOnTop(Instance* instance, bool on_top);
-  static bool DrawGlyphs(Instance* instance,
+  static void SetInstanceAlwaysOnTop(const InstanceHandle& instance, bool on_top);
+  static bool DrawGlyphs(const InstanceHandle& instance,
                          ImageData* image,
                          const FontDescription_Dev& font_desc,
                          uint32_t color,
                          const Point& position,
                          const Rect& clip,
                          const float transformation[3][3],
                          bool allow_subpixel_aa,
                          uint32_t glyph_count,
                          const uint16_t glyph_indices[],
                          const PP_Point glyph_advances[]);
-  static Var GetProxyForURL(Instance* instance, const std::string& url);
+  static Var GetProxyForURL(const InstanceHandle& instance,
+                            const std::string& url);
   static int32_t Navigate(const URLRequestInfo& request_info,
                           const std::string& target,
                           bool from_user_action);
-  static void RunMessageLoop(Instance* instance);
-  static void QuitMessageLoop(Instance* instance);
-  static double GetLocalTimeZoneOffset(Instance* instance, PP_Time t);
+  static void RunMessageLoop(const InstanceHandle& instance);
+  static void QuitMessageLoop(const InstanceHandle& instance);
+  static double GetLocalTimeZoneOffset(const InstanceHandle& instance, PP_Time t);
   static Var GetCommandLineArgs(Module* module);
   static void PreloadFontWin(const void* logfontw);
-  static bool IsRectTopmost(Instance* instance, const Rect& rect);
-  static int32_t InvokePrinting(Instance* instance);
-  static void UpdateActivity(Instance* instance);
+  static bool IsRectTopmost(const InstanceHandle& instance, const Rect& rect);
+  static int32_t InvokePrinting(const InstanceHandle& instance);
+  static void UpdateActivity(const InstanceHandle& instance);
 
 };
 
 }  // namespace flash
 }  // namespace pp
 
 #endif  // PPAPI_CPP_PRIVATE_FLASH_H_