Fix trailing whitespace in .cpp, .h, and .idl files

Source/core/loader/cache/CachedFont.cpp

Index: Source/core/loader/cache/CachedFont.cpp
diff --git a/Source/core/loader/cache/CachedFont.cpp b/Source/core/loader/cache/CachedFont.cpp
index b74fada83c0fb6a3fc2e6ec9f21adcf84093c4d0..fb7fdb32be497e2de54b51ae04857c659ddf4314 100644
--- a/Source/core/loader/cache/CachedFont.cpp
+++ b/Source/core/loader/cache/CachedFont.cpp
@@ -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.
  */
 
 #include "config.h"
@@ -106,9 +106,9 @@ bool CachedFont::ensureSVGFontData()
         RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create("application/xml");
         String svgSource = decoder->decode(m_data->data(), m_data->size());
         svgSource.append(decoder->flush());
-        
+
         m_externalSVGDocument->setContent(svgSource);
-        
+
         if (decoder->sawError())
             m_externalSVGDocument = 0;
     }