Remove unnecessary uses of aura::Env::GetDispatcher

ui/aura/gestures/gesture_recognizer_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/memory/scoped_vector.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/timer/timer.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 187 matching lines @@
   float velocity_x_ordinal() const { return velocity_x_ordinal_; }
   float velocity_y_ordinal() const { return velocity_y_ordinal_; }
   float scroll_x_hint() const { return scroll_x_hint_; }
   float scroll_y_hint() const { return scroll_y_hint_; }
   int touch_id() const { return touch_id_; }
   const gfx::Rect& bounding_box() const { return bounding_box_; }
   int tap_count() const { return tap_count_; }
 
   void WaitUntilReceivedGesture(ui::EventType type) {
     wait_until_event_ = type;
-    run_loop_.reset(new base::RunLoop(
-        Env::GetInstance()->GetDispatcher()));
+    run_loop_.reset(new base::RunLoop());
     run_loop_->Run();
   }
 
   virtual void OnGestureEvent(ui::GestureEvent* gesture) OVERRIDE {
     events_.push_back(gesture->type());
     bounding_box_ = gesture->details().bounding_box();
     switch (gesture->type()) {
       case ui::ET_GESTURE_TAP:
         tap_location_ = gesture->location();
         tap_count_ = gesture->details().tap_count();
@@ skipping 3814 matching lines @@
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_EQ(1, delegate->scroll_x());
   EXPECT_EQ(0, delegate->scroll_x_hint());
   delegate->Reset();
 
 }
 
 }  // namespace test
 }  // namespace aura