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

Source/core/loader/appcache/DOMApplicationCache.cpp

Index: Source/core/loader/appcache/DOMApplicationCache.cpp
diff --git a/Source/core/loader/appcache/DOMApplicationCache.cpp b/Source/core/loader/appcache/DOMApplicationCache.cpp
index 3b2467bb0d4ffe14145ba37afdad8624cef5f55f..14733f231f175eaaad5618d39b735b68bf58f881 100644
--- a/Source/core/loader/appcache/DOMApplicationCache.cpp
+++ b/Source/core/loader/appcache/DOMApplicationCache.cpp
@@ -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.
  */
 
 #include "config.h"
@@ -118,7 +118,7 @@ const AtomicString& DOMApplicationCache::toEventType(ApplicationCacheHost::Event
         return eventNames().updatereadyEvent;
     case ApplicationCacheHost::CACHED_EVENT:
         return eventNames().cachedEvent;
-    case ApplicationCacheHost::OBSOLETE_EVENT:            
+    case ApplicationCacheHost::OBSOLETE_EVENT:
         return eventNames().obsoleteEvent;
     }
     ASSERT_NOT_REACHED();