Standardize usage of virtual/override/final specifiers.

The Google C++ style guide states:

  Explicitly annotate overrides of virtual functions or virtual
  destructors with an override or (less frequently) final specifier.
  Older (pre-C++11) code will use the virtual keyword as an inferior
  alternative annotation. For clarity, use exactly one of override,
  final, or virtual when declaring an override.

To better conform to these guidelines, the following constructs have
been rewritten:

- if a base class has a virtual destructor, then:
    virtual ~Foo();                   ->  ~Foo() override;
- virtual void Foo() override;        ->  void Foo() override;
- virtual void Foo() override final;  ->  void Foo() final;

This patch was automatically generated. The clang plugin can generate
fixit hints, which are suggested edits when it is 100% sure it knows how
to fix a problem. The hints from the clang plugin were applied to the
source tree using the tool in https://codereview.chromium.org/598073004.

BUG=417463
R=yoz@chromium.org

Review URL: https://codereview.chromium.org/667153007

Cr-Commit-Position: refs/heads/master@{#301453}

3 files changed, 6 insertions, 6 deletions

diff --git a/extensions/shell/test/shell_apitest.h b/extensions/shell/test/shell_apitest.h
index 6eb0cb0..3688384 100644
--- a/extensions/shell/test/shell_apitest.h
+++ b/extensions/shell/test/shell_apitest.h
@@ -16,7 +16,7 @@ namespace extensions {
 class ShellApiTest : public AppShellTest {
  public:
   ShellApiTest();
-  virtual ~ShellApiTest();
+  ~ShellApiTest() override;
 
   // Loads an unpacked platform app from a directory using the current
   // ExtensionSystem, launches it, and waits for a chrome.test success
diff --git a/extensions/shell/test/shell_test.h b/extensions/shell/test/shell_test.h
index 286299d..fab2d15 100644
--- a/extensions/shell/test/shell_test.h
+++ b/extensions/shell/test/shell_test.h
@@ -25,10 +25,10 @@ class ShellExtensionSystem;
 class AppShellTest : public content::BrowserTestBase {
  public:
   AppShellTest();
-  virtual ~AppShellTest();
+  ~AppShellTest() override;
 
   // content::BrowserTestBase implementation.
-  virtual void SetUp() override;
+  void SetUp() override;
   void SetUpOnMainThread() override;
   void RunTestOnMainThreadLoop() override;
 
diff --git a/extensions/shell/test/shell_test_launcher_delegate.h b/extensions/shell/test/shell_test_launcher_delegate.h
index c6fbfdf..58976db 100644
--- a/extensions/shell/test/shell_test_launcher_delegate.h
+++ b/extensions/shell/test/shell_test_launcher_delegate.h
@@ -11,11 +11,11 @@ namespace extensions {
 
 class AppShellTestLauncherDelegate : public content::TestLauncherDelegate {
  public:
-  virtual int RunTestSuite(int argc, char** argv) override;
-  virtual bool AdjustChildProcessCommandLine(
+  int RunTestSuite(int argc, char** argv) override;
+  bool AdjustChildProcessCommandLine(
       base::CommandLine* command_line,
       const base::FilePath& temp_data_dir) override;
-  virtual content::ContentMainDelegate* CreateContentMainDelegate() override;
+  content::ContentMainDelegate* CreateContentMainDelegate() override;
 };
 
 }  // namespace extensions