Mojo: Add signal for new data pipe consumer data

mojo/public/cpp/bindings/tests/handle_passing_unittest.cc

 // Copyright 2013 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 <stdint.h>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 95 matching lines @@
                 const DoStuff2Callback& callback) override {
     // Read the data from the pipe, writing the response (as a string) to
     // DidStuff2().
     ASSERT_TRUE(pipe.is_valid());
     uint32_t data_size = 0;
 
     MojoHandleSignalsState state;
     ASSERT_EQ(MOJO_RESULT_OK,
               MojoWait(pipe.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
                        MOJO_DEADLINE_INDEFINITE, &state));
-    ASSERT_EQ(MOJO_HANDLE_SIGNAL_READABLE, state.satisfied_signals);
+    ASSERT_TRUE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE);
     ASSERT_EQ(MOJO_RESULT_OK,
               ReadDataRaw(
                   pipe.get(), nullptr, &data_size, MOJO_READ_DATA_FLAG_QUERY));
     ASSERT_NE(0, static_cast<int>(data_size));
     char data[64];
     ASSERT_LT(static_cast<int>(data_size), 64);
     ASSERT_EQ(
         MOJO_RESULT_OK,
         ReadDataRaw(
             pipe.get(), data, &data_size, MOJO_READ_DATA_FLAG_ALL_OR_NONE));
@@ skipping 220 matching lines @@
   run_loop.Run();
   run_loop2.Run();
 
   EXPECT_EQ(std::string("object1"), name1);
   EXPECT_EQ(std::string("object2"), name2);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo