Standardize usage of virtual/override/final in content/renderer/

content/renderer/browser_render_view_browsertest.cc

Index: content/renderer/browser_render_view_browsertest.cc
diff --git a/content/renderer/browser_render_view_browsertest.cc b/content/renderer/browser_render_view_browsertest.cc
index dd7cc7ddb68034e2749891251728f58764b26534..2c12bc7a4788eee293d916c21a312015f28161c9 100644
--- a/content/renderer/browser_render_view_browsertest.cc
+++ b/content/renderer/browser_render_view_browsertest.cc
@@ -49,13 +49,12 @@ class TestShellContentRendererClient : public ShellContentRendererClient {
         latest_error_reason_(0),
         latest_error_stale_copy_in_cache_(false) {}
 
-  virtual void GetNavigationErrorStrings(
-      content::RenderView* render_view,
-      blink::WebFrame* frame,
-      const blink::WebURLRequest& failed_request,
-      const blink::WebURLError& error,
-      std::string* error_html,
-      base::string16* error_description) override {
+  void GetNavigationErrorStrings(content::RenderView* render_view,
+                                 blink::WebFrame* frame,
+                                 const blink::WebURLRequest& failed_request,
+                                 const blink::WebURLError& error,
+                                 std::string* error_html,
+                                 base::string16* error_description) override {
     if (error_html)
       *error_html = "A suffusion of yellow.";
     latest_error_valid_ = true;
@@ -138,13 +137,13 @@ class RenderViewBrowserTest : public ContentBrowserTest {
  public:
   RenderViewBrowserTest() {}
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     // This method is needed to allow interaction with in-process renderer
     // and use of a test ContentRendererClient.
     command_line->AppendSwitch(switches::kSingleProcess);
   }
 
-  virtual void SetUpOnMainThread() override {
+  void SetUpOnMainThread() override {
     // Override setting of renderer client.
     renderer_client_ = new TestShellContentRendererClient();
     // Explicitly leaks ownership; this object will remain alive