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

Source/core/html/canvas/OESVertexArrayObject.idl

Index: Source/core/html/canvas/OESVertexArrayObject.idl
diff --git a/Source/core/html/canvas/OESVertexArrayObject.idl b/Source/core/html/canvas/OESVertexArrayObject.idl
index 0a7bd1f1bf2565dabb7ba9634322e52feeeb07b5..f8c858322782100817fa9d5fc6bb6bb0f64251a7 100644
--- a/Source/core/html/canvas/OESVertexArrayObject.idl
+++ b/Source/core/html/canvas/OESVertexArrayObject.idl
@@ -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.
  */
 
 [
@@ -28,7 +28,7 @@
     DoNotCheckConstants
 ] interface OESVertexArrayObject {
     const unsigned long VERTEX_ARRAY_BINDING_OES = 0x85B5;
-    
+
     [StrictTypeChecking] WebGLVertexArrayObjectOES createVertexArrayOES();
     [StrictTypeChecking] void         deleteVertexArrayOES([Default=Undefined] optional WebGLVertexArrayObjectOES arrayObject);
     [StrictTypeChecking] boolean      isVertexArrayOES([Default=Undefined] optional WebGLVertexArrayObjectOES arrayObject);