Update {virtual,override,final} to follow C++11 style in components, round 2.

components/crash/app/breakpad_linux.cc

Index: components/crash/app/breakpad_linux.cc
diff --git a/components/crash/app/breakpad_linux.cc b/components/crash/app/breakpad_linux.cc
index 09a9251e2d80c080617b4ecf70fc7ddb21b887b0..a925e07143e680f4cdb48e626f99253a352cb9a5 100644
--- a/components/crash/app/breakpad_linux.cc
+++ b/components/crash/app/breakpad_linux.cc
@@ -401,25 +401,25 @@ class CrashReporterWriter : public MimeWriter {
  public:
   explicit CrashReporterWriter(int fd);
 
-  virtual void AddBoundary() override;
+  void AddBoundary() override;
 
-  virtual void AddEnd() override;
+  void AddEnd() override;
 
-  virtual void AddPairData(const char* msg_type,
-                           size_t msg_type_size,
-                          const char* msg_data,
-                           size_t msg_data_size) override;
+  void AddPairData(const char* msg_type,
+                   size_t msg_type_size,
+                   const char* msg_data,
+                   size_t msg_data_size) override;
 
-  virtual void AddPairDataInChunks(const char* msg_type,
-                                   size_t msg_type_size,
-                                   const char* msg_data,
-                                   size_t msg_data_size,
-                                   size_t chunk_size,
-                                   bool strip_trailing_spaces) override;
+  void AddPairDataInChunks(const char* msg_type,
+                           size_t msg_type_size,
+                           const char* msg_data,
+                           size_t msg_data_size,
+                           size_t chunk_size,
+                           bool strip_trailing_spaces) override;
 
-  virtual void AddFileContents(const char* filename_msg,
-                               uint8_t* file_data,
-                               size_t file_size) override;
+  void AddFileContents(const char* filename_msg,
+                       uint8_t* file_data,
+                       size_t file_size) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CrashReporterWriter);