Fix lint errors

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 3c1e6c94d4af488c53e2d77761e0fdf39cfcffe7..f8cc894916ee8e402d1e44947dcd9d6d259e4605 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -2315,9 +2315,10 @@ TEST(DebugEvaluateWithoutStack) {
 
   CHECK_EQ(3, process_debug_messages_data.counter);
 
-  CHECK(strcmp("Pinguin", process_debug_messages_data.results[0].buffer) == 0);
-  CHECK(strcmp("Capybara", process_debug_messages_data.results[1].buffer) == 0);
-  CHECK(strcmp("805", process_debug_messages_data.results[2].buffer) == 0);
+  CHECK_EQ(strcmp("Pinguin", process_debug_messages_data.results[0].buffer), 0);
+  CHECK_EQ(strcmp("Capybara", process_debug_messages_data.results[1].buffer),
+           0);
+  CHECK_EQ(strcmp("805", process_debug_messages_data.results[2].buffer), 0);
 
   v8::Debug::SetMessageHandler(NULL);
   v8::Debug::SetDebugEventListener(NULL);
@@ -4264,7 +4265,7 @@ class BreakpointsV8Thread : public v8::internal::Thread {
 
 class BreakpointsDebuggerThread : public v8::internal::Thread {
  public:
-  BreakpointsDebuggerThread(bool global_evaluate)
+  explicit BreakpointsDebuggerThread(bool global_evaluate)
       : global_evaluate_(global_evaluate) {}
   void Run();