[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..e4a670146260e8bcbf2f6c3558e63f350e5fa3f6 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;
@@ -41,7 +43,7 @@ class ChannelInfo {
   // 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;
@@ -57,11 +59,12 @@ class ChannelInfo {
   // modified.
   bool SetChromeFrame(bool value);
 
-  // Returns true if the -applauncher modifier is present in the value.
+  // (Deprecated) 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.
+  // (Deprecated) 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.
@@ -85,7 +88,7 @@ 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 +116,7 @@ class ChannelInfo {
   bool RemoveAllModifiersAndSuffixes();
 
  private:
-  std::wstring value_;
+  base::string16 value_;
 };  // class ChannelInfo
 
 }  // namespace installer