Use implicit_cast<> instead of static_cast<> whenever possible

client/capture_context_mac_test.cc

Index: client/capture_context_mac_test.cc
diff --git a/client/capture_context_mac_test.cc b/client/capture_context_mac_test.cc
index 6d5967d5f470d14e9270aeab56e59096b97ac50e..660776afe4c933b20d84dd2c4cc2c82a6dde667b 100644
--- a/client/capture_context_mac_test.cc
+++ b/client/capture_context_mac_test.cc
@@ -19,6 +19,7 @@
 
 #include <algorithm>
 
+#include "base/basictypes.h"
 #include "build/build_config.h"
 #include "gtest/gtest.h"
 
@@ -34,10 +35,10 @@ namespace {
 void SanityCheckContext(NativeCPUContext* context) {
 #if defined(ARCH_CPU_X86)
   ASSERT_EQ(x86_THREAD_STATE32, context->tsh.flavor);
-  ASSERT_EQ(static_cast<int>(x86_THREAD_STATE32_COUNT), context->tsh.count);
+  ASSERT_EQ(implicit_cast<int>(x86_THREAD_STATE32_COUNT), context->tsh.count);
 #elif defined(ARCH_CPU_X86_64)
   ASSERT_EQ(x86_THREAD_STATE64, context->tsh.flavor);
-  ASSERT_EQ(static_cast<int>(x86_THREAD_STATE64_COUNT), context->tsh.count);
+  ASSERT_EQ(implicit_cast<int>(x86_THREAD_STATE64_COUNT), context->tsh.count);
 #endif
 
 #if defined(ARCH_CPU_X86_FAMILY)