Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/wtf/dtoa/fast-dtoa.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef DOUBLE_CONVERSION_FAST_DTOA_H_
 #define DOUBLE_CONVERSION_FAST_DTOA_H_
 
 #include "utils.h"
 
 namespace WTF {
 
 namespace double_conversion {
-    
+
     enum FastDtoaMode {
         // Computes the shortest representation of the given input. The returned
         // result will be the most accurate number of this length. Longer
         // representations might be more accurate.
         FAST_DTOA_SHORTEST,
         // Computes a representation where the precision (number of digits) is
         // given as input. The precision is independent of the decimal point.
         FAST_DTOA_PRECISION
     };
-    
+
     // FastDtoa will produce at most kFastDtoaMaximalLength digits. This does not
     // include the terminating '\0' character.
     static const int kFastDtoaMaximalLength = 17;
-    
+
     // Provides a decimal representation of v.
     // The result should be interpreted as buffer * 10^(point - length).
     //
     // Precondition:
     //   * v must be a strictly positive finite double.
     //
     // Returns true if it succeeds, otherwise the result can not be trusted.
     // There will be *length digits inside the buffer followed by a null terminator.
     // If the function returns true and mode equals
     //   - FAST_DTOA_SHORTEST, then
@@ skipping 12 matching lines @@
     //     all possible representations of requested_digits digits.
     //     If there are two values that are equally close, then FastDtoa returns
     //     false.
     // For both modes the buffer must be large enough to hold the result.
     bool FastDtoa(double d,
                   FastDtoaMode mode,
                   int requested_digits,
                   Vector<char> buffer,
                   int* length,
                   int* decimal_point);
-    
+
 }  // namespace double_conversion
 
 } // namespace WTF
 
 #endif  // DOUBLE_CONVERSION_FAST_DTOA_H_