[gin] Turn gin into a component

gin/wrappable.h

 // Copyright 2013 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 GIN_WRAPPABLE_H_
 #define GIN_WRAPPABLE_H_
 
 #include "base/template_util.h"
 #include "gin/converter.h"
+#include "gin/gin_export.h"
 #include "gin/public/wrapper_info.h"
 
 namespace gin {
 
 namespace internal {
 
-void* FromV8Impl(v8::Isolate* isolate, v8::Handle<v8::Value> val,
-                 WrapperInfo* info);
+GIN_EXPORT void* FromV8Impl(v8::Isolate* isolate,
+                            v8::Handle<v8::Value> val,
+                            WrapperInfo* info);
 
 }  // namespace internal
 
 
 // Wrappable is a base class for C++ objects that have corresponding v8 wrapper
 // objects. To retain a Wrappable object on the stack, use a gin::Handle.
 //
 // USAGE:
 // // my_class.h
 // class MyClass : Wrappable<MyClass> {
 //   ...
 // };
 //
 // // my_class.cc
 // INIT_WRAPABLE(MyClass);
 //
 // Subclasses should also typically have private constructors and expose a
 // static Create function that returns a gin::Handle. Forcing creators through
 // this static Create function will enforce that clients actually create a
 // wrapper for the object. If clients fail to create a wrapper for a wrappable
 // object, the object will leak because we use the weak callback from the
 // wrapper as the signal to delete the wrapped object.
 template<typename T>
 class Wrappable;
 
 
 // Non-template base class to share code between templates instances.
-class WrappableBase {
+class GIN_EXPORT WrappableBase {
  protected:
   WrappableBase();
   virtual ~WrappableBase();
   v8::Handle<v8::Object> GetWrapperImpl(v8::Isolate* isolate,
                                         WrapperInfo* wrapper_info);
   v8::Handle<v8::Object> CreateWrapper(v8::Isolate* isolate,
                                        WrapperInfo* wrapper_info);
   v8::Persistent<v8::Object> wrapper_;  // Weak
 
  private:
@@ skipping 34 matching lines @@
   static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val, T** out) {
     *out = static_cast<T*>(internal::FromV8Impl(isolate, val,
                                                 &T::kWrapperInfo));
     return *out != NULL;
   }
 };
 
 }  // namespace gin
 
 #endif  // GIN_WRAPPABLE_H_