Move the Dispatcher::EntrypointClass enum out of Dispatcher to its own file.

mojo/edk/system/platform_handle_dispatcher_unittest.cc

 // Copyright 2014 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 "mojo/edk/system/platform_handle_dispatcher.h"
 
 #include <stdio.h>
 
 #include <utility>
 
@@ skipping 56 matching lines @@
   ASSERT_TRUE(fp);
 
   ScopedPlatformHandle h(PlatformHandleFromFILE(std::move(fp)));
   EXPECT_FALSE(fp);
   ASSERT_TRUE(h.is_valid());
 
   auto d = PlatformHandleDispatcher::Create(h.Pass());
   ASSERT_TRUE(d);
   EXPECT_FALSE(h.is_valid());
 
-  EXPECT_FALSE(
-      d->SupportsEntrypointClass(Dispatcher::EntrypointClass::MESSAGE_PIPE));
-  EXPECT_FALSE(d->SupportsEntrypointClass(
-      Dispatcher::EntrypointClass::DATA_PIPE_PRODUCER));
-  EXPECT_FALSE(d->SupportsEntrypointClass(
-      Dispatcher::EntrypointClass::DATA_PIPE_CONSUMER));
-  EXPECT_FALSE(d->SupportsEntrypointClass(Dispatcher::EntrypointClass::BUFFER));
+  EXPECT_FALSE(d->SupportsEntrypointClass(EntrypointClass::MESSAGE_PIPE));
+  EXPECT_FALSE(d->SupportsEntrypointClass(EntrypointClass::DATA_PIPE_PRODUCER));
+  EXPECT_FALSE(d->SupportsEntrypointClass(EntrypointClass::DATA_PIPE_CONSUMER));
+  EXPECT_FALSE(d->SupportsEntrypointClass(EntrypointClass::BUFFER));
 
   // TODO(vtl): Check that it actually returns |MOJO_RESULT_INVALID_ARGUMENT|
   // for methods in unsupported entrypoint classes.
 
   EXPECT_EQ(MOJO_RESULT_OK, d->Close());
 }
 
 TEST(PlatformHandleDispatcherTest, CreateEquivalentDispatcherAndClose) {
   test::ScopedTestDir test_dir;
 
@@ skipping 30 matching lines @@
   EXPECT_EQ(sizeof(kFooBar),
             fread(read_buffer, 1, sizeof(read_buffer), fp.get()));
   EXPECT_STREQ(kFooBar, read_buffer);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher->Close());
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo