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

ppapi/cpp/graphics_2d.cc

 // 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.
 
 #include "ppapi/cpp/graphics_2d.h"
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_graphics_2d.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/image_data.h"
-#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/module_impl.h"
 #include "ppapi/cpp/point.h"
 #include "ppapi/cpp/rect.h"
 
 namespace pp {
 
 namespace {
 
 template <> const char* interface_name<PPB_Graphics2D>() {
   return PPB_GRAPHICS_2D_INTERFACE;
 }
 
 }  // namespace
 
 Graphics2D::Graphics2D() : Resource() {
 }
 
 Graphics2D::Graphics2D(const Graphics2D& other)
     : Resource(other),
       size_(other.size_) {
 }
 
-Graphics2D::Graphics2D(Instance* instance,
+Graphics2D::Graphics2D(const InstanceHandle& instance,
                        const Size& size,
                        bool is_always_opaque)
     : Resource() {
   if (!has_interface<PPB_Graphics2D>())
     return;
   PassRefFromConstructor(get_interface<PPB_Graphics2D>()->Create(
-      instance->pp_instance(),
+      instance.pp_instance(),
       &size.pp_size(),
       PP_FromBool(is_always_opaque)));
   if (!is_null()) {
     // Only save the size if allocation succeeded.
     size_ = size;
   }
 }
 
 Graphics2D::~Graphics2D() {
 }
@@ skipping 45 matching lines @@
 }
 
 int32_t Graphics2D::Flush(const CompletionCallback& cc) {
   if (!has_interface<PPB_Graphics2D>())
     return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_Graphics2D>()->Flush(pp_resource(),
                                                 cc.pp_completion_callback());
 }
 
 }  // namespace pp