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

Source/core/accessibility/AccessibilityMenuListPopup.cpp

Index: Source/core/accessibility/AccessibilityMenuListPopup.cpp
diff --git a/Source/core/accessibility/AccessibilityMenuListPopup.cpp b/Source/core/accessibility/AccessibilityMenuListPopup.cpp
index 5fe2624b1102432eb176e53a94d001a46f712a27..82079e3a61ec3b95c78e9e8e9912962d64f22b2b 100644
--- a/Source/core/accessibility/AccessibilityMenuListPopup.cpp
+++ b/Source/core/accessibility/AccessibilityMenuListPopup.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"
@@ -47,7 +47,7 @@ bool AccessibilityMenuListPopup::isOffScreen() const
 {
     if (!m_parent)
         return true;
-    
+
     return m_parent->isCollapsed();
 }
 
@@ -55,7 +55,7 @@ bool AccessibilityMenuListPopup::isEnabled() const
 {
     if (!m_parent)
         return false;
-    
+
     return m_parent->isEnabled();
 }
 
@@ -82,7 +82,7 @@ bool AccessibilityMenuListPopup::press() const
 {
     if (!m_parent)
         return false;
-    
+
     m_parent->press();
     return true;
 }
@@ -91,7 +91,7 @@ void AccessibilityMenuListPopup::addChildren()
 {
     if (!m_parent)
         return;
-    
+
     Node* selectNode = m_parent->node();
     if (!selectNode)
         return;
@@ -119,7 +119,7 @@ void AccessibilityMenuListPopup::childrenChanged()
             cache->remove(child->axObjectID());
         }
     }
-    
+
     m_children.clear();
     m_haveChildren = false;
     addChildren();