Revert of Change mojo_public_bindings_unittests to use chromium environment.

third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc

Index: third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc
diff --git a/third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc b/third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc
index c9c9f01813af766a56cf2baa8c7bcce2015b79d3..e6dcb5dc22503835ddc84c79c5d6e09c2e6748b2 100644
--- a/third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc
+++ b/third_party/mojo/src/mojo/public/cpp/bindings/tests/router_unittest.cc
@@ -5,12 +5,12 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "base/message_loop/message_loop.h"
-#include "mojo/message_pump/message_pump_mojo.h"
 #include "mojo/public/cpp/bindings/lib/message_builder.h"
 #include "mojo/public/cpp/bindings/lib/router.h"
 #include "mojo/public/cpp/bindings/tests/message_queue.h"
+#include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/system/macros.h"
+#include "mojo/public/cpp/utility/run_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
@@ -125,7 +125,7 @@
 
 class RouterTest : public testing::Test {
  public:
-  RouterTest() : loop_(common::MessagePumpMojo::Create()) {}
+  RouterTest() {}
 
   void SetUp() override {
     CreateMessagePipe(nullptr, &handle0_, &handle1_);
@@ -140,7 +140,8 @@
   ScopedMessagePipeHandle handle1_;
 
  private:
-  base::MessageLoop loop_;
+  Environment env_;
+  RunLoop loop_;
 };
 
 TEST_F(RouterTest, BasicRequestResponse) {