Convert the async device ID getter to a chrome resource host

ppapi/examples/2d/paint_manager_example.cc

Index: ppapi/examples/2d/paint_manager_example.cc
diff --git a/ppapi/examples/2d/paint_manager_example.cc b/ppapi/examples/2d/paint_manager_example.cc
index 86bdbe79ed8f9f2a8e820cd682f24c57cbb413d7..f85a2c24125c2e2d84a13ff9a454f2763d1ec4eb 100644
--- a/ppapi/examples/2d/paint_manager_example.cc
+++ b/ppapi/examples/2d/paint_manager_example.cc
@@ -8,8 +8,10 @@
 #include "ppapi/cpp/input_event.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
+#include "ppapi/cpp/private/flash_device_id.h"

[yzshen1, 2012/09/11 00:53:17]

I think you are not going to commit this file, right?

 #include "ppapi/cpp/size.h"
 #include "ppapi/cpp/view.h"
+#include "ppapi/utility/completion_callback_factory.h"
 #include "ppapi/utility/graphics/paint_manager.h"
 
 // Number of pixels to each side of the center of the square that we draw.
@@ -42,13 +44,27 @@ class MyInstance : public pp::Instance, public pp::PaintManager::Client {
         paint_manager_(),
         last_x_(0),
         last_y_(0) {
+    factory_.Initialize(this);
+    device_id_ = pp::flash::DeviceID(this);
+
     paint_manager_.Initialize(this, this, false);
     RequestInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
   }
 
+  pp::CompletionCallbackFactory<MyInstance> factory_;
+  pp::flash::DeviceID device_id_;
+
+  void GotDeviceID(int32_t result, const pp::Var& id) {
+    std::string value = id.AsString();
+    value.append("");
+  }
+
   virtual bool HandleInputEvent(const pp::InputEvent& event) {
     switch (event.GetType()) {
       case PP_INPUTEVENT_TYPE_MOUSEDOWN: {
+        device_id_.GetDeviceID(factory_.NewCallbackWithOutput(
+            &MyInstance::GotDeviceID));
+
         pp::MouseInputEvent mouse_event(event);
         // Update the square on a mouse down.
         if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) {