Update {virtual,override,final} to follow C++11 style in chrome.

The Google style guide states that only one of {virtual,override,final}
should be used for each declaration, since override implies virtual and
final implies both virtual and override.

This patch was automatically generated with an OS=android build using a
variation of https://codereview.chromium.org/598073004.

BUG=417463

Review URL: https://codereview.chromium.org/900183004

Cr-Commit-Position: refs/heads/master@{#314953}

chrome/android/shell/chrome_main_delegate_chrome_shell_android.h

@@ -10,9 +10,9 @@
 class ChromeMainDelegateChromeShellAndroid : public ChromeMainDelegateAndroid {
  public:
   ChromeMainDelegateChromeShellAndroid();
-  virtual ~ChromeMainDelegateChromeShellAndroid();
+  ~ChromeMainDelegateChromeShellAndroid() override;
 
-  virtual bool BasicStartupComplete(int* exit_code) override;
+  bool BasicStartupComplete(int* exit_code) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeMainDelegateChromeShellAndroid);

chrome/android/sync_shell/chrome_main_delegate_chrome_sync_shell_android.h

@@ -11,11 +11,11 @@ class ChromeMainDelegateChromeSyncShellAndroid
     : public ChromeMainDelegateAndroid {
  public:
   ChromeMainDelegateChromeSyncShellAndroid();
-  virtual ~ChromeMainDelegateChromeSyncShellAndroid();
+  ~ChromeMainDelegateChromeSyncShellAndroid() override;
 
-  virtual bool RegisterApplicationNativeMethods(JNIEnv* env) override;
+  bool RegisterApplicationNativeMethods(JNIEnv* env) override;
 
-  virtual bool BasicStartupComplete(int* exit_code) override;
+  bool BasicStartupComplete(int* exit_code) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeMainDelegateChromeSyncShellAndroid);

chrome/app/android/chrome_main_delegate_android.h

@@ -19,13 +19,13 @@ class ChromeMainDelegateAndroid : public ChromeMainDelegate {
 
  protected:
   ChromeMainDelegateAndroid();
-  virtual ~ChromeMainDelegateAndroid();
+  ~ChromeMainDelegateAndroid() override;
 
-  virtual bool BasicStartupComplete(int* exit_code) override;
+  bool BasicStartupComplete(int* exit_code) override;
 
-  virtual void SandboxInitialized(const std::string& process_type) override;
+  void SandboxInitialized(const std::string& process_type) override;
 
-  virtual int RunProcess(
+  int RunProcess(
       const std::string& process_type,
       const content::MainFunctionParams& main_function_params) override;
 

chrome/app/chrome_crash_reporter_client.h

@@ -58,7 +58,7 @@ class ChromeCrashReporterClient : public crash_reporter::CrashReporterClient {
 #endif
 
 #if defined(OS_ANDROID)
-  virtual int GetAndroidMinidumpDescriptor() override;
+  int GetAndroidMinidumpDescriptor() override;
 #endif
 
 #if defined(OS_MACOSX)

chrome/browser/enhanced_bookmarks/android/bookmark_image_service_factory.h

@@ -16,7 +16,7 @@ class BookmarkImageServiceFactory : public BrowserContextKeyedServiceFactory {
   static BookmarkImageService* GetForBrowserContext(
       content::BrowserContext* context);
 
-  virtual ~BookmarkImageServiceFactory();
+  ~BookmarkImageServiceFactory() override;
 
  private:
   friend struct DefaultSingletonTraits<BookmarkImageServiceFactory>;