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

Source/core/loader/cache/CachedFont.h

Index: Source/core/loader/cache/CachedFont.h
diff --git a/Source/core/loader/cache/CachedFont.h b/Source/core/loader/cache/CachedFont.h
index 6ea52119d24d3c45bd20755b8046eeacf08a258d..d9d05190256c30932fbd266155ada8aa4082a1d5 100644
--- a/Source/core/loader/cache/CachedFont.h
+++ b/Source/core/loader/cache/CachedFont.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 CachedFont_h
@@ -43,7 +43,7 @@ class CachedFont : public CachedResource {
 public:
     CachedFont(const ResourceRequest&);
     virtual ~CachedFont();
-    
+
     virtual void load(ResourceFetcher*, const ResourceLoaderOptions&);
 
     virtual void didAddClient(CachedResourceClient*);