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

Source/wtf/text/TextCodec.h

Index: Source/wtf/text/TextCodec.h
diff --git a/Source/wtf/text/TextCodec.h b/Source/wtf/text/TextCodec.h
index 0190757a7f6fe18489c832763aa842b7307e8eea..4797ee59ee40bac3f08053985ca65d4355cd1319 100644
--- a/Source/wtf/text/TextCodec.h
+++ b/Source/wtf/text/TextCodec.h
@@ -21,7 +21,7 @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef TextCodec_h
@@ -68,13 +68,13 @@ public:
         bool ignored;
         return decode(str, length, flush, false, ignored);
     }
-    
+
     virtual String decode(const char*, size_t length, bool flush, bool stopOnError, bool& sawError) = 0;
     virtual CString encode(const UChar*, size_t length, UnencodableHandling) = 0;
     virtual CString encode(const LChar*, size_t length, UnencodableHandling) = 0;
 
     // Fills a null-terminated string representation of the given
-    // unencodable character into the given replacement buffer. 
+    // unencodable character into the given replacement buffer.
     // The length of the string (not including the null) will be returned.
     static int getUnencodableReplacement(unsigned codePoint, UnencodableHandling, UnencodableReplacementArray);
 };