Standardize usage of virtual/override/final specifiers in content/.

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index 5349aaf707e63561f78996f96f0c515a40066795..31b5d37de654410520ee50f8a8e306bab50eae15 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -2288,7 +2288,7 @@ class RenderViewImplInitialSizeTest : public RenderViewImplTest {
       : RenderViewImplTest(), initial_size_(200, 100) {}
 
  protected:
-  virtual scoped_ptr<ViewMsg_Resize_Params> InitialSizeParams() override {
+  scoped_ptr<ViewMsg_Resize_Params> InitialSizeParams() override {
     scoped_ptr<ViewMsg_Resize_Params> initial_size_params(
         new ViewMsg_Resize_Params());
     initial_size_params->new_size = initial_size_;