Fix newly discovered presubmit errors.

src/interpreter-irregexp.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A simple interpreter for the Irregexp byte code.
 
 
 #include "src/v8.h"
 
 #include "src/ast.h"
@@ skipping 118 matching lines @@
   return *reinterpret_cast<const uint16_t *>(pc);
 }
 
 
 // A simple abstraction over the backtracking stack used by the interpreter.
 // This backtracking stack does not grow automatically, but it ensures that the
 // the memory held by the stack is released or remembered in a cache if the
 // matching terminates.
 class BacktrackStack {
  public:
-  explicit BacktrackStack() {
-    data_ = NewArray<int>(kBacktrackStackSize);
-  }
+  BacktrackStack() { data_ = NewArray<int>(kBacktrackStackSize); }
 
   ~BacktrackStack() {
     DeleteArray(data_);
   }
 
   int* data() const { return data_; }
 
   int max_size() const { return kBacktrackStackSize; }
 
  private:
@@ skipping 450 matching lines @@
     return RawMatch(isolate,
                     code_base,
                     subject_vector,
                     registers,
                     start_position,
                     previous_char);
   }
 }
 
 } }  // namespace v8::internal