Standardize usage of virtual/override/final specifiers.

extensions/shell/common/shell_extensions_client.h

Index: extensions/shell/common/shell_extensions_client.h
diff --git a/extensions/shell/common/shell_extensions_client.h b/extensions/shell/common/shell_extensions_client.h
index ba9a3309fdd3b0641a09a0b7d05a0f919dd15a61..1b6decec8e23856ed135b8a7f81f8d0ed91a7bfa 100644
--- a/extensions/shell/common/shell_extensions_client.h
+++ b/extensions/shell/common/shell_extensions_client.h
@@ -16,37 +16,34 @@ namespace extensions {
 class ShellExtensionsClient : public ExtensionsClient {
  public:
   ShellExtensionsClient();
-  virtual ~ShellExtensionsClient();
+  ~ShellExtensionsClient() override;
 
   // ExtensionsClient overrides:
-  virtual void Initialize() override;
-  virtual const PermissionMessageProvider& GetPermissionMessageProvider()
+  void Initialize() override;
+  const PermissionMessageProvider& GetPermissionMessageProvider()
       const override;
-  virtual const std::string GetProductName() override;
-  virtual scoped_ptr<FeatureProvider> CreateFeatureProvider(
+  const std::string GetProductName() override;
+  scoped_ptr<FeatureProvider> CreateFeatureProvider(
       const std::string& name) const override;
-  virtual scoped_ptr<JSONFeatureProviderSource> CreateFeatureProviderSource(
+  scoped_ptr<JSONFeatureProviderSource> CreateFeatureProviderSource(
       const std::string& name) const override;
-  virtual void FilterHostPermissions(
+  void FilterHostPermissions(
       const URLPatternSet& hosts,
       URLPatternSet* new_hosts,
       std::set<PermissionMessage>* messages) const override;
-  virtual void SetScriptingWhitelist(
-      const ScriptingWhitelist& whitelist) override;
-  virtual const ScriptingWhitelist& GetScriptingWhitelist() const override;
-  virtual URLPatternSet GetPermittedChromeSchemeHosts(
+  void SetScriptingWhitelist(const ScriptingWhitelist& whitelist) override;
+  const ScriptingWhitelist& GetScriptingWhitelist() const override;
+  URLPatternSet GetPermittedChromeSchemeHosts(
       const Extension* extension,
       const APIPermissionSet& api_permissions) const override;
-  virtual bool IsScriptableURL(const GURL& url,
-                               std::string* error) const override;
-  virtual bool IsAPISchemaGenerated(const std::string& name) const override;
-  virtual base::StringPiece GetAPISchema(
-      const std::string& name) const override;
-  virtual void RegisterAPISchemaResources(ExtensionAPI* api) const override;
-  virtual bool ShouldSuppressFatalErrors() const override;
-  virtual std::string GetWebstoreBaseURL() const override;
-  virtual std::string GetWebstoreUpdateURL() const override;
-  virtual bool IsBlacklistUpdateURL(const GURL& url) const override;
+  bool IsScriptableURL(const GURL& url, std::string* error) const override;
+  bool IsAPISchemaGenerated(const std::string& name) const override;
+  base::StringPiece GetAPISchema(const std::string& name) const override;
+  void RegisterAPISchemaResources(ExtensionAPI* api) const override;
+  bool ShouldSuppressFatalErrors() const override;
+  std::string GetWebstoreBaseURL() const override;
+  std::string GetWebstoreUpdateURL() const override;
+  bool IsBlacklistUpdateURL(const GURL& url) const override;
 
  private:
   const ExtensionsAPIPermissions extensions_api_permissions_;