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

Source/core/html/PluginDocument.cpp

Index: Source/core/html/PluginDocument.cpp
diff --git a/Source/core/html/PluginDocument.cpp b/Source/core/html/PluginDocument.cpp
index 154d2aeb12e7c998e2ed7d95c7bbbac0114c440c..106783c596821b4ddf0d8927de97df83d2c5d354 100644
--- a/Source/core/html/PluginDocument.cpp
+++ b/Source/core/html/PluginDocument.cpp
@@ -19,7 +19,7 @@
  * 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"
@@ -39,7 +39,7 @@
 #include "core/rendering/RenderEmbeddedObject.h"
 
 namespace WebCore {
-    
+
 using namespace HTMLNames;
 
 // FIXME: Share more code with MediaDocumentParser.
@@ -83,16 +83,16 @@ void PluginDocumentParser::createDocumentStructure()
     body->setAttribute(styleAttr, "background-color: rgb(38,38,38)");
 
     rootElement->appendChild(body, IGNORE_EXCEPTION);
-        
+
     RefPtr<Element> embedElement = document()->createElement(embedTag, false);
-        
+
     m_embedElement = static_cast<HTMLEmbedElement*>(embedElement.get());
     m_embedElement->setAttribute(widthAttr, "100%");
     m_embedElement->setAttribute(heightAttr, "100%");
-    
+
     m_embedElement->setAttribute(nameAttr, "plugin");
     m_embedElement->setAttribute(srcAttr, document()->url().string());
-    
+
     DocumentLoader* loader = document()->loader();
     ASSERT(loader);
     if (loader)
@@ -112,7 +112,7 @@ void PluginDocumentParser::createDocumentStructure()
     document()->updateLayout();
 
     // Below we assume that renderer->widget() to have been created by
-    // document()->updateLayout(). However, in some cases, updateLayout() will 
+    // document()->updateLayout(). However, in some cases, updateLayout() will
     // recurse too many times and delay its post-layout tasks (such as creating
     // the widget). Here we kick off the pending post-layout tasks so that we
     // can synchronously redirect data to the plugin.