Convert various ReleaseSoon methods to use base::Bind()

base/task.h

Index: base/task.h
diff --git a/base/task.h b/base/task.h
index 7e87ff72abc4067e94190f2c459b0363707c83a2..b546af5193347c02c31174c0f3c623b1bde0e7f7 100644
--- a/base/task.h
+++ b/base/task.h
@@ -224,35 +224,12 @@ class DeleteTask : public CancelableTask {
   const T* obj_;
 };
 
-// Task to Release() an object
-template<class T>
-class ReleaseTask : public CancelableTask {
- public:
-  explicit ReleaseTask(const T* obj) : obj_(obj) {
-  }
-  virtual void Run() {
-    if (obj_)
-      obj_->Release();
-  }
-  virtual void Cancel() {
-    obj_ = NULL;
-  }
-
- private:
-  const T* obj_;
-};
-
 // Equivalents for use by base::Bind().
 template<typename T>
 void DeletePointer(T* obj) {
   delete obj;
 }
 
-template<typename T>
-void ReleasePointer(T* obj) {
-  obj->Release();
-}
-
 // RunnableMethodTraits --------------------------------------------------------
 //
 // This traits-class is used by RunnableMethod to manage the lifetime of the