Update mojo sdk to rev e7270700d671fa8e458b4d8c9e47f7bcfb65da0b

third_party/mojo/src/mojo/public/cpp/environment/environment.h

Index: third_party/mojo/src/mojo/public/cpp/environment/environment.h
diff --git a/third_party/mojo/src/mojo/public/cpp/environment/environment.h b/third_party/mojo/src/mojo/public/cpp/environment/environment.h
index ce3f7d01ad96b42e0ed6647b778ea1e108f18f68..3a544286de354a3678c4a767dd8be69460f17e5f 100644
--- a/third_party/mojo/src/mojo/public/cpp/environment/environment.h
+++ b/third_party/mojo/src/mojo/public/cpp/environment/environment.h
@@ -12,6 +12,8 @@ struct MojoLogger;
 
 namespace mojo {
 
+struct TaskTracker;
+
 // Other parts of the Mojo C++ APIs use the *static* methods of this class.
 //
 // The "standalone" implementation of this class requires that this class (in
@@ -26,11 +28,13 @@ class Environment {
   // This constructor allows the standard implementations to be overridden (set
   // a parameter to null to get the standard implementation).
   Environment(const MojoAsyncWaiter* default_async_waiter,
-              const MojoLogger* default_logger);
+              const MojoLogger* default_logger,
+              const TaskTracker* default_task_tracker);
   ~Environment();
 
   static const MojoAsyncWaiter* GetDefaultAsyncWaiter();
   static const MojoLogger* GetDefaultLogger();
+  static const TaskTracker* GetDefaultTaskTracker();
 
   // These instantiate and destroy an environment-specific run loop for the
   // current thread, allowing |GetDefaultAsyncWaiter()| to be used. (The run