Use implicit_cast<> instead of static_cast<> whenever possible

client/simulate_crash_mac.cc

Index: client/simulate_crash_mac.cc
diff --git a/client/simulate_crash_mac.cc b/client/simulate_crash_mac.cc
index b80355a4f161d3ff394892330aa61d90561720a5..053b50a26d730c08515a7602a08d4bdeb3982baa 100644
--- a/client/simulate_crash_mac.cc
+++ b/client/simulate_crash_mac.cc
@@ -143,7 +143,7 @@ bool DeliverException(thread_t thread,
   thread_state_data_t new_state;
   size_t state_size =
       sizeof(natural_t) *
-      std::min(state_count, static_cast<unsigned int>(THREAD_STATE_MAX));
+      std::min(state_count, implicit_cast<unsigned int>(THREAD_STATE_MAX));
   memcpy(new_state, state, state_size);
   mach_msg_type_number_t new_state_count = THREAD_STATE_MAX;
 
@@ -181,13 +181,13 @@ bool DeliverException(thread_t thread,
 void SimulateCrash(const NativeCPUContext* cpu_context) {
 #if defined(ARCH_CPU_X86)
   DCHECK_EQ(cpu_context->tsh.flavor,
-            static_cast<thread_state_flavor_t>(x86_THREAD_STATE32));
-  DCHECK_EQ(static_cast<mach_msg_type_number_t>(cpu_context->tsh.count),
+            implicit_cast<thread_state_flavor_t>(x86_THREAD_STATE32));
+  DCHECK_EQ(implicit_cast<mach_msg_type_number_t>(cpu_context->tsh.count),
             x86_THREAD_STATE32_COUNT);
 #elif defined(ARCH_CPU_X86_64)
   DCHECK_EQ(cpu_context->tsh.flavor,
-            static_cast<thread_state_flavor_t>(x86_THREAD_STATE64));
-  DCHECK_EQ(static_cast<mach_msg_type_number_t>(cpu_context->tsh.count),
+            implicit_cast<thread_state_flavor_t>(x86_THREAD_STATE64));
+  DCHECK_EQ(implicit_cast<mach_msg_type_number_t>(cpu_context->tsh.count),
             x86_THREAD_STATE64_COUNT);
 #endif