[Installer] Cleaning up dead code for App Launcher / App Host installs.

chrome/installer/util/channel_info.h

Index: chrome/installer/util/channel_info.h
diff --git a/chrome/installer/util/channel_info.h b/chrome/installer/util/channel_info.h
index f14811390af910d522735dfda1957096132e844c..f525c41ce1fa605d7f1517660ca74cfb05c804ef 100644
--- a/chrome/installer/util/channel_info.h
+++ b/chrome/installer/util/channel_info.h
@@ -7,6 +7,8 @@
 
 #include <string>
 
+#include "base/strings/string16.h"
+
 namespace base {
 namespace win {
 class RegKey;
@@ -31,17 +33,20 @@ class ChannelInfo {
   // Returns false if the value could not be written to the registry.
   bool Write(base::win::RegKey* key) const;
 
-  const std::wstring& value() const { return value_; }
-  void set_value(const std::wstring& value) { value_ = value; }
-  bool Equals(const ChannelInfo& other) const {
-    return value_ == other.value_;
-  }
+  // Updates |value| by removing deprecated contents.
+  static void AuditValue(base::string16* value);
+
+  const base::string16& value() const;
+
+  void set_value(const base::string16& value);
+
+  bool Equals(const ChannelInfo& other) const;
 
   // Determines the update channel for the value.  Possible |channel_name|
   // results are the empty string (stable channel), "beta", and "dev".  Returns
   // false (without modifying |channel_name|) if the channel could not be
   // determined.
-  bool GetChannelName(std::wstring* channel_name) const;
+  bool GetChannelName(base::string16* channel_name) const;
 
   // Returns true if the -chrome modifier is present in the value.
   bool IsChrome() const;
@@ -57,13 +62,6 @@ class ChannelInfo {
   // modified.
   bool SetChromeFrame(bool value);
 
-  // Returns true if the -applauncher modifier is present in the value.
-  bool IsAppLauncher() const;
-
-  // Adds or removes the -applauncher modifier, returning true if the value is
-  // modified.
-  bool SetAppLauncher(bool value);
-
   // Returns true if the -multi modifier is present in the value.
   bool IsMultiInstall() const;
 
@@ -85,7 +83,7 @@ class ChannelInfo {
 
   // Returns the string identifying the current stage, or an empty string if the
   // -stage: modifier is not present in the value.
-  std::wstring GetStage() const;
+  base::string16 GetStage() const;
 
   // Returns true if the -full suffix is present in the value.
   bool HasFullSuffix() const;
@@ -113,7 +111,7 @@ class ChannelInfo {
   bool RemoveAllModifiersAndSuffixes();
 
  private:
-  std::wstring value_;
+  base::string16 value_;
 };  // class ChannelInfo
 
 }  // namespace installer