Fix official Mac build for strict virtual annotations check.

chrome/browser/component_updater/widevine_cdm_component_installer.cc

Index: chrome/browser/component_updater/widevine_cdm_component_installer.cc
diff --git a/chrome/browser/component_updater/widevine_cdm_component_installer.cc b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
index 811321c2a805ebf9d06256a6b7a0c2b5a79f8b40..28b67ab9c37cc8e0d53f44a02cb8709013f08cf2 100644
--- a/chrome/browser/component_updater/widevine_cdm_component_installer.cc
+++ b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
@@ -234,23 +234,23 @@ void RegisterWidevineCdmWithChrome(const base::Version& cdm_version,
 class WidevineCdmComponentInstallerTraits : public ComponentInstallerTraits {
  public:
   WidevineCdmComponentInstallerTraits();
-  virtual ~WidevineCdmComponentInstallerTraits() {}
+  ~WidevineCdmComponentInstallerTraits() override {}

[dcheng, 2015/01/13 21:52:51]

Note: I left this due to the discussion on
https://codereview.chromium.org/826213004 (namely, to guarantee this class has a
virtual dtor), but I don't know how important it is--the base class already has
a virtual dtor.

 
  private:
   // The following methods override ComponentInstallerTraits.
-  virtual bool CanAutoUpdate() const override;
-  virtual bool OnCustomInstall(const base::DictionaryValue& manifest,
+  bool CanAutoUpdate() const override;
+  bool OnCustomInstall(const base::DictionaryValue& manifest,
                                const base::FilePath& install_dir) override;
-  virtual bool VerifyInstallation(
+  bool VerifyInstallation(
       const base::DictionaryValue& manifest,
       const base::FilePath& install_dir) const override;
-  virtual void ComponentReady(
+  void ComponentReady(
       const base::Version& version,
       const base::FilePath& path,
       scoped_ptr<base::DictionaryValue> manifest) override;
-  virtual base::FilePath GetBaseDirectory() const override;
-  virtual void GetHash(std::vector<uint8_t>* hash) const override;
-  virtual std::string GetName() const override;
+  base::FilePath GetBaseDirectory() const override;
+  void GetHash(std::vector<uint8_t>* hash) const override;
+  std::string GetName() const override;
 
   // Checks and updates CDM adapter if necessary to make sure the latest CDM
   // adapter is always used.