Revert 87415 - Convert more interfaces to the new thunk system. This goes up to and including

ppapi/shared_impl/function_group_base.h

 // Copyright (c) 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 PPAPI_SHARED_IMPL_FUNCTION_GROUP_BASE_H_
 #define PPAPI_SHARED_IMPL_FUNCTION_GROUP_BASE_H_
 
-#include <stddef.h>  // For NULL.
-
-#define FOR_ALL_PPAPI_FUNCTION_APIS(F) \
-  F(PPB_CharSet_FunctionAPI) \
-  F(PPB_CursorControl_FunctionAPI) \
-  F(PPB_Find_FunctionAPI) \
-  F(PPB_Font_FunctionAPI) \
-  F(ResourceCreationAPI)
-
 namespace ppapi {
 
-// Forward declare all the function APIs.
 namespace thunk {
-#define DECLARE_FUNCTION_CLASS(FUNCTIONS) class FUNCTIONS;
-FOR_ALL_PPAPI_FUNCTION_APIS(DECLARE_FUNCTION_CLASS)
-#undef DECLARE_FUNCTION_CLASS
-}  // namespace thunk
+class PPB_CharSet_FunctionAPI;
+class PPB_CursorControl_FunctionAPI;
+class PPB_Font_FunctionAPI;
+class ResourceCreationAPI;
+}
 
 class FunctionGroupBase {
  public:
-  virtual ~FunctionGroupBase();
+  virtual ~FunctionGroupBase() {}
 
   // Dynamic casting for this object. Returns the pointer to the given type if
-  // Inheritance-based dynamic casting for this object. Returns the pointer to
-  // the given type if it's supported. Derived classes override the functions
-  // they support to return the interface.
-  #define DEFINE_TYPE_GETTER(FUNCTIONS) \
-    virtual thunk::FUNCTIONS* As##FUNCTIONS();
-  FOR_ALL_PPAPI_FUNCTION_APIS(DEFINE_TYPE_GETTER)
-  #undef DEFINE_TYPE_GETTER
+  // it's supported.
+  virtual thunk::PPB_CharSet_FunctionAPI* AsCharSet_FunctionAPI() {
+    return NULL;
+  }
+  virtual thunk::PPB_CursorControl_FunctionAPI* AsCursorControl_FunctionAPI() {
+    return NULL;
+  }
+  virtual thunk::PPB_Font_FunctionAPI* AsFont_FunctionAPI() {
+    return NULL;
+  }
+  virtual thunk::ResourceCreationAPI* AsResourceCreation() {
+    return NULL;
+  }
 
-  // Template-based dynamic casting. See specializations below.
   template <typename T> T* GetAs() { return NULL; }
 };
 
-// Template-based dynamic casting. These specializations forward to the
-// AsXXX virtual functions to return whether the given type is supported.
-#define DEFINE_FUNCTION_CAST(FUNCTIONS) \
-  template<> inline thunk::FUNCTIONS* FunctionGroupBase::GetAs() { \
-    return As##FUNCTIONS(); \
-  }
-FOR_ALL_PPAPI_FUNCTION_APIS(DEFINE_FUNCTION_CAST)
-#undef DEFINE_FUNCTION_CAST
+template<>
+inline thunk::PPB_CharSet_FunctionAPI* FunctionGroupBase::GetAs() {
+  return AsCharSet_FunctionAPI();
+}
+template<>
+inline thunk::PPB_CursorControl_FunctionAPI* FunctionGroupBase::GetAs() {
+  return AsCursorControl_FunctionAPI();
+}
+template<>
+inline thunk::PPB_Font_FunctionAPI* FunctionGroupBase::GetAs() {
+  return AsFont_FunctionAPI();
+}
+template<>
+inline ppapi::thunk::ResourceCreationAPI* FunctionGroupBase::GetAs() {
+  return AsResourceCreation();
+}
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_FUNCTION_GROUP_BASE_H_