Correct const accessors in base/values.(h|cc)

chrome/test/webdriver/commands/chrome_commands.h

Index: chrome/test/webdriver/commands/chrome_commands.h
diff --git a/chrome/test/webdriver/commands/chrome_commands.h b/chrome/test/webdriver/commands/chrome_commands.h
index 7fc7993172c1a5d20156e182baa1ef03ee0df6d1..ed8f28bb90ba53764eec3712d9f3f7d1fe47e911 100644
--- a/chrome/test/webdriver/commands/chrome_commands.h
+++ b/chrome/test/webdriver/commands/chrome_commands.h
@@ -23,7 +23,7 @@ class Response;
 class ExtensionsCommand : public WebDriverCommand {
  public:
   ExtensionsCommand(const std::vector<std::string>& path_segments,
-                    const base::DictionaryValue* const parameters);
+                    base::DictionaryValue* const parameters);
   virtual ~ExtensionsCommand();
 
   virtual bool DoesGet() OVERRIDE;
@@ -43,7 +43,7 @@ class ExtensionsCommand : public WebDriverCommand {
 class ExtensionCommand : public WebDriverCommand {
  public:
   ExtensionCommand(const std::vector<std::string>& path_segments,
-                   const base::DictionaryValue* const parameters);
+                   base::DictionaryValue* const parameters);
   virtual ~ExtensionCommand();
 
   virtual bool Init(Response* const response) OVERRIDE;
@@ -71,7 +71,7 @@ class ExtensionCommand : public WebDriverCommand {
 class ViewsCommand : public WebDriverCommand {
  public:
   ViewsCommand(const std::vector<std::string>& path_segments,
-               const base::DictionaryValue* const parameters);
+               base::DictionaryValue* const parameters);
   virtual ~ViewsCommand();
 
   virtual bool DoesGet() OVERRIDE;
@@ -87,7 +87,7 @@ class ViewsCommand : public WebDriverCommand {
 class HeapProfilerDumpCommand : public WebDriverCommand {
  public:
   HeapProfilerDumpCommand(const std::vector<std::string>& path_segments,
-                          const base::DictionaryValue* const parameters);
+                          base::DictionaryValue* const parameters);
   virtual ~HeapProfilerDumpCommand();
 
   virtual bool DoesPost() OVERRIDE;