Update content/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

content/plugin/webplugin_proxy.cc

Index: content/plugin/webplugin_proxy.cc
diff --git a/content/plugin/webplugin_proxy.cc b/content/plugin/webplugin_proxy.cc
index f0834d0e8fc5bdf196597afeb8ee0f37e23a4e4f..5817060f541ce6d4ae4be89f444d7eeec5364e6e 100644
--- a/content/plugin/webplugin_proxy.cc
+++ b/content/plugin/webplugin_proxy.cc
@@ -220,8 +220,10 @@ NPObject* WebPluginProxy::GetWindowScriptNPObject() {
   if (!success)
     return NULL;
 
-  window_npobject_ = NPObjectProxy::Create(
-      channel_, npobject_route_id, host_render_view_routing_id_, page_url_);
+  window_npobject_ = NPObjectProxy::Create(channel_.get(),
+                                           npobject_route_id,
+                                           host_render_view_routing_id_,
+                                           page_url_);
 
   return window_npobject_;
 }
@@ -237,8 +239,10 @@ NPObject* WebPluginProxy::GetPluginElement() {
   if (!success)
     return NULL;
 
-  plugin_element_ = NPObjectProxy::Create(
-      channel_, npobject_route_id, host_render_view_routing_id_, page_url_);
+  plugin_element_ = NPObjectProxy::Create(channel_.get(),
+                                          npobject_route_id,
+                                          host_render_view_routing_id_,
+                                          page_url_);
 
   return plugin_element_;
 }
@@ -278,7 +282,7 @@ WebPluginResourceClient* WebPluginProxy::GetResourceClient(int id) {
 }
 
 int WebPluginProxy::GetRendererId() {
-  if (channel_)
+  if (channel_.get())
     return channel_->renderer_id();
   return -1;
 }