Pepper: Access PepperMediaDeviceManager through a WeakPtr

content/renderer/pepper/pepper_media_device_manager.cc

Index: content/renderer/pepper/pepper_media_device_manager.cc
diff --git a/content/renderer/pepper/pepper_media_device_manager.cc b/content/renderer/pepper/pepper_media_device_manager.cc
index 0d54964ebc43be717448af96ad6ff693228c3522..676b2fb44b931b0da3b0f01a89dc5404953cafe6 100644
--- a/content/renderer/pepper/pepper_media_device_manager.cc
+++ b/content/renderer/pepper/pepper_media_device_manager.cc
@@ -25,13 +25,14 @@ ppapi::DeviceRefData FromStreamDeviceInfo(const StreamDeviceInfo& info) {
 
 }  // namespace
 
-PepperMediaDeviceManager* PepperMediaDeviceManager::GetForRenderFrame(
+base::WeakPtr<PepperMediaDeviceManager>
+PepperMediaDeviceManager::GetForRenderFrame(
     RenderFrame* render_frame) {
   PepperMediaDeviceManager* handler =
       PepperMediaDeviceManager::Get(render_frame);
   if (!handler)
     handler = new PepperMediaDeviceManager(render_frame);
-  return handler;
+  return handler->AsWeakPtr();
 }
 
 PepperMediaDeviceManager::PepperMediaDeviceManager(RenderFrame* render_frame)