Added support for Wipe Task

Test: tested wipe on Raven
Bug: 194686221
Change-Id: I582800a279cbe8a3e733a1e75447e5b5142d4120
diff --git a/fastboot/task.h b/fastboot/task.h
index 0af771e..149c34c 100644
--- a/fastboot/task.h
+++ b/fastboot/task.h
@@ -100,3 +100,13 @@
     const FlashingPlan* fp_;
     const std::string pname_;
 };
+
+class WipeTask : public Task {
+  public:
+    WipeTask(FlashingPlan* fp, const std::string& pname);
+    void Run() override;
+
+  private:
+    const FlashingPlan* fp_;
+    const std::string pname_;
+};