Replace implicit_cast usage with static_cast.

client/capture_context_mac_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "client/capture_context_mac.h"
 
 #include <mach/mach.h>
 #include <stdint.h>
 
 #include <algorithm>
 
-#include "base/basictypes.h"
 #include "build/build_config.h"
 #include "gtest/gtest.h"
+#include "util/misc/implicit_cast.h"
 
 namespace crashpad {
 namespace test {
 namespace {
 
 // If the context structure has fields that tell whether it’s valid, such as
 // magic numbers or size fields, sanity-checks those fields for validity with
 // fatal gtest assertions. For other fields, where it’s possible to reason about
 // their validity based solely on their contents, sanity-checks via nonfatal
 // gtest assertions.
@@ skipping 108 matching lines @@
   EXPECT_GT(ProgramCounterFromContext(&context_2), pc);
 }
 
 TEST(CaptureContextMac, CaptureContext) {
   ASSERT_NO_FATAL_FAILURE(TestCaptureContext());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad