Remove custom Task implementations from content/ppapi_plugin

content/ppapi_plugin/plugin_process_dispatcher.cc

Index: content/ppapi_plugin/plugin_process_dispatcher.cc
diff --git a/content/ppapi_plugin/plugin_process_dispatcher.cc b/content/ppapi_plugin/plugin_process_dispatcher.cc
index 0243100ede23def13d11cd8f56026e4ff82c9157..1ac23d14795e783679d3ffc559d74fe5d0252411 100644
--- a/content/ppapi_plugin/plugin_process_dispatcher.cc
+++ b/content/ppapi_plugin/plugin_process_dispatcher.cc
@@ -4,17 +4,12 @@
 
 #include "content/ppapi_plugin/plugin_process_dispatcher.h"
 
+#include "base/bind.h"
+#include "base/bind_helpers.h"
 #include "content/common/child_process.h"
 
 namespace {
 
-class PluginReleaseTask : public Task {
- public:
-  void Run() {
-    ChildProcess::current()->ReleaseProcess();
-  }
-};
-
 // How long we wait before releasing the plugin process.
 const int kPluginReleaseTimeMs = 30 * 1000;  // 30 seconds.
 
@@ -33,6 +28,9 @@ PluginProcessDispatcher::~PluginProcessDispatcher() {
   // plugin. This is the case for common plugins where they may be used on a
   // source and destination page of a navigation. We don't want to tear down
   // and re-start processes each time in these cases.
-  MessageLoop::current()->PostDelayedTask(FROM_HERE, new PluginReleaseTask(),
-                                          kPluginReleaseTimeMs);
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE,
+      base::Bind(&ChildProcess::ReleaseProcess,
+                 base::Unretained(ChildProcess::current())),
+      kPluginReleaseTimeMs);
 }