Fix compiling errors in gcm_store_impl_unittest

google_apis/gcm/engine/gcm_store_impl_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 "google_apis/gcm/engine/gcm_store_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 147 matching lines @@
       "app2",
       registration2,
       base::Bind(&GCMStoreImplTest::UpdateCallback, base::Unretained(this)));
   PumpLoop();
 
   gcm_store = BuildGCMStore().Pass();
   gcm_store->Load(base::Bind(
       &GCMStoreImplTest::LoadCallback, base::Unretained(this), &load_result));
   PumpLoop();
 
-  ASSERT_EQ(2, load_result->registrations.size());
+  ASSERT_EQ(2u, load_result->registrations.size());
   ASSERT_TRUE(load_result->registrations.find("app1") !=
               load_result->registrations.end());
   EXPECT_EQ(registration1->registration_id,
             load_result->registrations["app1"]->registration_id);
-  ASSERT_EQ(1, load_result->registrations["app1"]->sender_ids.size());
+  ASSERT_EQ(1u, load_result->registrations["app1"]->sender_ids.size());
   EXPECT_EQ(registration1->sender_ids[0],
             load_result->registrations["app1"]->sender_ids[0]);
   ASSERT_TRUE(load_result->registrations.find("app2") !=
               load_result->registrations.end());
   EXPECT_EQ(registration2->registration_id,
             load_result->registrations["app2"]->registration_id);
-  ASSERT_EQ(2, load_result->registrations["app2"]->sender_ids.size());
+  ASSERT_EQ(2u, load_result->registrations["app2"]->sender_ids.size());
   EXPECT_EQ(registration2->sender_ids[0],
             load_result->registrations["app2"]->sender_ids[0]);
   EXPECT_EQ(registration2->sender_ids[1],
             load_result->registrations["app2"]->sender_ids[1]);
 }
 
 // Verify saving some incoming messages, reopening the directory, and then
 // removing those incoming messages.
 TEST_F(GCMStoreImplTest, IncomingMessages) {
   scoped_ptr<GCMStore> gcm_store(BuildGCMStore());
@@ skipping 273 matching lines @@
 
   gcm_store->Load(base::Bind(&GCMStoreImplTest::LoadCallback,
                              base::Unretained(this),
                              &load_result));
   PumpLoop();
 }
 
 }  // namespace
 
 }  // namespace gcm