Add moc generated files to .gitignore.

So that git status is clean again.

R=tomhudson@google.com

Review URL: https://codereview.appspot.com/6591045

git-svn-id: http://skia.googlecode.com/svn/trunk@5750 2bbb7eff-a529-9590-31e7-b0007b416f81

.gitignore

@@ -1,5 +1,6 @@
 .DS_Store
 .gclient*
+/debugger/QT/moc_*
 /gyp/build/
 /out/
 /third_party/externals/