C++11 override should now be supported by all of {bots,Chrome,Android,Mozilla}

site/dev/contrib/style.md

 Coding Style Guidelines
 =======================
 
 These conventions have evolved over time. Some of the earlier code in both
 projects doesn’t strictly adhere to the guidelines. However, as the code evolves
 we hope to make the existing code conform to the guildelines.
 
 Files
 -----
 
@@ skipping 303 matching lines @@
 
 <!--?prettify?-->
 ~~~~
 class GrDillPickle : public GrPickle {
     ...
 private:
     typedef GrPickle INHERITED;
 };
 ~~~~
 
-Virtual functions that are overridden in derived classes should use SK_OVERRIDE
+Virtual functions that are overridden in derived classes should use override
 (and not the override keyword). The virtual keyword can be omitted.
 
 <!--?prettify?-->
 ~~~~
-void myVirtual() SK_OVERRIDE {
+void myVirtual() override {
 }
 ~~~~
 
 This should be the last element of their private section, and all references to 
 base-class implementations of a virtual function should be explicitly qualified:
 
 <!--?prettify?-->
 ~~~~
-void myVirtual() SK_OVERRIDE {
+void myVirtual() override {
     ...
     this->INHERITED::myVirtual();
     ...
 }
 ~~~~
 
 As in the above example, derived classes that redefine virtual functions should
-use SK_OVERRIDE to note that explicitly.
+use override to note that explicitly.
 
 Constructor initializers should be one per line, indented, with punctuation
 placed before the initializer. This is a fairly new rule so much of the existing
 code is non-conforming. Please fix as you go!
 
 <!--?prettify?-->
 ~~~~
 GrDillPickle::GrDillPickle()
     : GrPickle()
     , fSize(kDefaultPickleSize) {
@@ skipping 194 matching lines @@
     this->drawBitmapRectToRect(
             bitmap, NULL, dst, paint, kNone_DrawBitmapRectFlag);
 }
 ~~~~
 
 Python
 ------
 
 Python code follows the [Google Python Style Guide](http://google-styleguide.googlecode.com/svn/trunk/pyguide.html).