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

Source/wtf/unicode/UTF8.h

Index: Source/wtf/unicode/UTF8.h
diff --git a/Source/wtf/unicode/UTF8.h b/Source/wtf/unicode/UTF8.h
index b014fa613f0d872df208c43080ab4b06f8c448ed..8b04cb90262ab41c30ff2fe3cfc801b9506b4278 100644
--- a/Source/wtf/unicode/UTF8.h
+++ b/Source/wtf/unicode/UTF8.h
@@ -20,7 +20,7 @@
  * 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 WTF_UTF8_h
@@ -53,26 +53,26 @@ namespace Unicode {
     // flag is set to strict, both irregular sequences and isolated surrogates
     // will cause an error.  When the flag is set to lenient, both irregular
     // sequences and isolated surrogates are converted.
-    // 
+    //
     // Whether the flag is strict or lenient, all illegal sequences will cause
     // an error return. This includes sequences such as: <F4 90 80 80>, <C0 80>,
     // or <A0> in UTF-8, and values above 0x10FFFF in UTF-32. Conformant code
     // must check for illegal sequences.
-    // 
+    //
     // When the flag is set to lenient, characters over 0x10FFFF are converted
     // to the replacement character; otherwise (when the flag is set to strict)
     // they constitute an error.
 
     WTF_EXPORT ConversionResult convertUTF8ToUTF16(
-                    const char** sourceStart, const char* sourceEnd, 
+                    const char** sourceStart, const char* sourceEnd,
                     UChar** targetStart, UChar* targetEnd, bool* isSourceAllASCII = 0, bool strict = true);
 
     WTF_EXPORT ConversionResult convertLatin1ToUTF8(
-                    const LChar** sourceStart, const LChar* sourceEnd, 
+                    const LChar** sourceStart, const LChar* sourceEnd,
                     char** targetStart, char* targetEnd);
 
     WTF_EXPORT ConversionResult convertUTF16ToUTF8(
-                    const UChar** sourceStart, const UChar* sourceEnd, 
+                    const UChar** sourceStart, const UChar* sourceEnd,
                     char** targetStart, char* targetEnd, bool strict = true);
 
     WTF_EXPORT unsigned calculateStringHashAndLengthFromUTF8MaskingTop8Bits(const char* data, const char* dataEnd, unsigned& dataLength, unsigned& utf16Length);