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

Source/core/html/HTMLCanvasElement.h

Index: Source/core/html/HTMLCanvasElement.h
diff --git a/Source/core/html/HTMLCanvasElement.h b/Source/core/html/HTMLCanvasElement.h
index 386dc77ddf6e76a20640a14a262f3e999cb6a4a9..3d31d775c1e4c39df461058bf159b39ab75d05d7 100644
--- a/Source/core/html/HTMLCanvasElement.h
+++ b/Source/core/html/HTMLCanvasElement.h
@@ -22,7 +22,7 @@
  * 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 HTMLCanvasElement_h
@@ -77,10 +77,10 @@ public:
     bool accelerationDisabled() const { return m_accelerationDisabled; }
 
     void setSize(const IntSize& newSize)
-    { 
+    {
         if (newSize == size() && m_deviceScaleFactor == 1)
             return;
-        m_ignoreReset = true; 
+        m_ignoreReset = true;
         setWidth(newSize.width());
         setHeight(newSize.height());
         m_ignoreReset = false;