Use implicit_cast<> instead of static_cast<> whenever possible

util/numeric/checked_range.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 45 matching lines @@
   //! \return `true` if the range is valid, `false` otherwise.
   //!
   //! A range is valid if its size can be converted to the range’s data type
   //! without data loss, and if its end (base plus size) can be computed without
   //! overflowing its data type.
   bool IsValid() const {
     if (!base::IsValueInRangeForNumericType<ValueType, SizeType>(size_)) {
       return false;
     }
     base::CheckedNumeric<ValueType> checked_end(base_);
-    checked_end += static_cast<ValueType>(size_);
+    checked_end += implicit_cast<ValueType>(size_);
     return checked_end.IsValid();
   }
 
   //! \brief Returns whether the range contains another value.
   //!
   //! \param[in] value The (possibly) contained value.
   //!
   //! \return `true` if the range contains \a value, `false` otherwise.
   //!
   //! A range contains a value if the value is greater than or equal to its
@@ skipping 29 matching lines @@
  private:
   ValueType base_;
   SizeType size_;
 
   DISALLOW_COPY_AND_ASSIGN(CheckedRange);
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_NUMERIC_CHECKED_RANGE_H_