Use implicit_cast<> instead of static_cast<> whenever possible

client/simulate_crash_mac_test.cc

Index: client/simulate_crash_mac_test.cc
diff --git a/client/simulate_crash_mac_test.cc b/client/simulate_crash_mac_test.cc
index 813dc6159048891e211bd9ac75695087413a77b2..e3a96ed2878da84c9f309d7ffbed526c6e22c499 100644
--- a/client/simulate_crash_mac_test.cc
+++ b/client/simulate_crash_mac_test.cc
@@ -124,11 +124,11 @@ class TestSimulateCrashMac final : public MachMultiprocess,
               reinterpret_cast<const x86_thread_state*>(old_state);
           switch (state->tsh.flavor) {
             case x86_THREAD_STATE32:
-              EXPECT_EQ(static_cast<int>(x86_THREAD_STATE32_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_THREAD_STATE32_COUNT),
                         state->tsh.count);
               break;
             case x86_THREAD_STATE64:
-              EXPECT_EQ(static_cast<int>(x86_THREAD_STATE64_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_THREAD_STATE64_COUNT),
                         state->tsh.count);
               break;
             default:
@@ -143,11 +143,11 @@ class TestSimulateCrashMac final : public MachMultiprocess,
               reinterpret_cast<const x86_float_state*>(old_state);
           switch (state->fsh.flavor) {
             case x86_FLOAT_STATE32:
-              EXPECT_EQ(static_cast<int>(x86_FLOAT_STATE32_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_FLOAT_STATE32_COUNT),
                         state->fsh.count);
               break;
             case x86_FLOAT_STATE64:
-              EXPECT_EQ(static_cast<int>(x86_FLOAT_STATE64_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_FLOAT_STATE64_COUNT),
                         state->fsh.count);
               break;
             default:
@@ -162,11 +162,11 @@ class TestSimulateCrashMac final : public MachMultiprocess,
               reinterpret_cast<const x86_debug_state*>(old_state);
           switch (state->dsh.flavor) {
             case x86_DEBUG_STATE32:
-              EXPECT_EQ(static_cast<int>(x86_DEBUG_STATE32_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_DEBUG_STATE32_COUNT),
                         state->dsh.count);
               break;
             case x86_DEBUG_STATE64:
-              EXPECT_EQ(static_cast<int>(x86_DEBUG_STATE64_COUNT),
+              EXPECT_EQ(implicit_cast<int>(x86_DEBUG_STATE64_COUNT),
                         state->dsh.count);
               break;
             default: