Add base:: to string16s in chrome/.

chrome/installer/util/app_command.h

Index: chrome/installer/util/app_command.h
diff --git a/chrome/installer/util/app_command.h b/chrome/installer/util/app_command.h
index c0cca9b130e6042a8ae1eb10e9b4cd5ba0f2e290..245619703c8e82e97598db813b0609a87abf2bd0 100644
--- a/chrome/installer/util/app_command.h
+++ b/chrome/installer/util/app_command.h
@@ -27,7 +27,7 @@ class AppCommand {
   AppCommand();
   // Constructs a new command that will execute the given |command_line|.
   // All other properties default to false.
-  explicit AppCommand(const string16& command_line);
+  explicit AppCommand(const base::string16& command_line);
   // The implicit dtor, copy ctor and assignment operator are desired.
 
   // Initializes an instance from the command in |key|.
@@ -36,14 +36,14 @@ class AppCommand {
   // Adds to |item_list| work items to write this object to the key named
   // |command_path| under |predefined_root|.
   void AddWorkItems(HKEY predefined_root,
-                    const string16& command_path,
+                    const base::string16& command_path,
                     WorkItemList* item_list) const;
 
   // Returns the command-line for the app command as it is represented in the
   // registry.  Use CommandLine::FromString() on this value to check arguments
   // or to launch the command.
-  const string16& command_line() const { return command_line_; }
-  void set_command_line(const string16& command_line) {
+  const base::string16& command_line() const { return command_line_; }
+  void set_command_line(const base::string16& command_line) {
     command_line_ = command_line;
   }
 
@@ -66,7 +66,7 @@ class AppCommand {
   }
 
  protected:
-  string16 command_line_;
+  base::string16 command_line_;
   bool sends_pings_;
   bool is_web_accessible_;
   bool is_auto_run_on_os_upgrade_;