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

ppapi/cpp/graphics_3d_client.cc

Index: ppapi/cpp/graphics_3d_client.cc
diff --git a/ppapi/cpp/graphics_3d_client.cc b/ppapi/cpp/graphics_3d_client.cc
index d827f9d95f1e01081a182e6ee57bdf4e2a35aae6..6702c057e0836a4e1dab34cd747d0df478e00fd7 100644
--- a/ppapi/cpp/graphics_3d_client.cc
+++ b/ppapi/cpp/graphics_3d_client.cc
@@ -6,6 +6,7 @@
 
 #include "ppapi/c/ppp_graphics_3d.h"
 #include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/module_impl.h"
 
@@ -17,7 +18,7 @@ const char kPPPGraphics3DInterface[] = PPP_GRAPHICS_3D_INTERFACE;
 
 void Graphics3D_ContextLost(PP_Instance instance) {
   void* object =
-      pp::Instance::GetPerInstanceObject(instance, kPPPGraphics3DInterface);
+      Instance::GetPerInstanceObject(instance, kPPPGraphics3DInterface);
   if (!object)
     return;
   return static_cast<Graphics3DClient*>(object)->Graphics3DContextLost();
@@ -29,15 +30,16 @@ static PPP_Graphics3D graphics3d_interface = {
 
 }  // namespace
 
-Graphics3DClient::Graphics3DClient(Instance* instance)
+Graphics3DClient::Graphics3DClient(const InstanceHandle& instance)
     : associated_instance_(instance) {
-  pp::Module::Get()->AddPluginInterface(kPPPGraphics3DInterface,
-                                        &graphics3d_interface);
-  associated_instance_->AddPerInstanceObject(kPPPGraphics3DInterface, this);
+  Module::Get()->AddPluginInterface(kPPPGraphics3DInterface,
+                                    &graphics3d_interface);
+  Instance::AddPerInstanceObject(instance, kPPPGraphics3DInterface, this);
 }
 
 Graphics3DClient::~Graphics3DClient() {
-  associated_instance_->RemovePerInstanceObject(kPPPGraphics3DInterface, this);
+  Instance::RemovePerInstanceObject(associated_instance_,
+                                    kPPPGraphics3DInterface, this);
 }
 
 }  // namespace pp