Cleanup: Better constify some strings in chrome/browser/{chromeos,extensions}.

chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/braille_display_private/braille_controller_brlapi.h"
 
 #include <algorithm>
 #include <cerrno>
 #include <cstring>
 #include <vector>
@@ skipping 48 matching lines @@
 
 BrailleControllerImpl::~BrailleControllerImpl() {
 }
 
 void BrailleControllerImpl::TryLoadLibBrlApi() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (libbrlapi_loader_.loaded())
     return;
   // These versions of libbrlapi work the same for the functions we
   // are using.  (0.6.0 adds brlapi_writeWText).
-  static const char* kSupportedVersions[] = {
+  static const char* const kSupportedVersions[] = {
     "libbrlapi.so.0.5",
     "libbrlapi.so.0.6"
   };
   for (size_t i = 0; i < arraysize(kSupportedVersions); ++i) {
     if (libbrlapi_loader_.Load(kSupportedVersions[i]))
       return;
   }
   LOG(WARNING) << "Couldn't load libbrlapi: " << strerror(errno);
 }
 
@@ skipping 190 matching lines @@
   while (true) {
     int result = connection_->ReadKey(&code);
     if (result < 0) {  // Error.
       brlapi_error_t* err = connection_->BrlapiError();
       if (err->brlerrno == BRLAPI_ERROR_LIBCERR && err->libcerrno == EINTR)
         continue;
       // Disconnect on other errors.
       VLOG(1) << "BrlAPI error: " << connection_->BrlapiStrError();
       Disconnect();
       return;
-    } else if (result == 0) { // No more data.
+    } else if (result == 0) {  // No more data.
       return;
     }
     scoped_ptr<KeyEvent> event = BrlapiKeyCodeToEvent(code);
     if (event)
       DispatchKeyEvent(event.Pass());
   }
 }
 
 void BrailleControllerImpl::DispatchKeyEvent(scoped_ptr<KeyEvent> event) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
@@ skipping 20 matching lines @@
     }
     return;
   }
   FOR_EACH_OBSERVER(BrailleObserver, observers_,
                     OnBrailleDisplayStateChanged(*new_state));
 }
 
 }  // namespace braille_display_private
 }  // namespace api
 }  // namespace extensions