Revert of Remove installation of Chrome Frame.

chrome/installer/util/master_preferences.cc

Index: chrome/installer/util/master_preferences.cc
diff --git a/chrome/installer/util/master_preferences.cc b/chrome/installer/util/master_preferences.cc
index 76b544ff61985a1d358140ee8ba174a8b7b48fd1..cf2830055579d97f3ec25287dd061e7ebada768d 100644
--- a/chrome/installer/util/master_preferences.cc
+++ b/chrome/installer/util/master_preferences.cc
@@ -75,6 +75,7 @@
                                          preferences_read_from_file_(false),
                                          chrome_(true),
                                          chrome_app_launcher_(false),
+                                         chrome_frame_(false),
                                          multi_install_(false) {
   InitializeFromCommandLine(*CommandLine::ForCurrentProcess());
 }
@@ -84,6 +85,7 @@
       preferences_read_from_file_(false),
       chrome_(true),
       chrome_app_launcher_(false),
+      chrome_frame_(false),
       multi_install_(false) {
   InitializeFromCommandLine(cmd_line);
 }
@@ -93,6 +95,7 @@
       preferences_read_from_file_(false),
       chrome_(true),
       chrome_app_launcher_(false),
+      chrome_frame_(false),
       multi_install_(false) {
   std::string json_data;
   // Failure to read the file is ignored as |json_data| will be the empty string
@@ -111,6 +114,7 @@
       preferences_read_from_file_(false),
       chrome_(true),
       chrome_app_launcher_(false),
+      chrome_frame_(false),
       multi_install_(false) {
   InitializeFromString(prefs);
 }
@@ -145,6 +149,8 @@
       installer::master_preferences::kChromeAppLauncher },
     { installer::switches::kChrome,
       installer::master_preferences::kChrome },
+    { installer::switches::kChromeFrame,
+      installer::master_preferences::kChromeFrame },
     { installer::switches::kDisableLogging,
       installer::master_preferences::kDisableLogging },
     { installer::switches::kMsi,
@@ -225,10 +231,12 @@
 void MasterPreferences::InitializeProductFlags() {
   // Make sure we start out with the correct defaults.
   multi_install_ = false;
+  chrome_frame_ = false;
   chrome_app_launcher_ = false;
   chrome_ = true;
 
   GetBool(installer::master_preferences::kMultiInstall, &multi_install_);
+  GetBool(installer::master_preferences::kChromeFrame, &chrome_frame_);
 
   GetBool(installer::master_preferences::kChromeAppLauncher,
           &chrome_app_launcher_);
@@ -242,12 +250,17 @@
   // When multi-install is specified, the checks are pretty simple (in theory):
   // In order to be installed/uninstalled, each product must have its switch
   // present on the command line.
-  // When multi-install is not set, operate on Chrome.
+  // Before multi-install was introduced however, we only supported installing
+  // two products, Chrome and Chrome Frame.  For the time being we need to
+  // continue to support this mode where multi-install is not set.
+  // So, when multi-install is not set, we continue to support mutually
+  // exclusive installation of Chrome and Chrome Frame.
   if (multi_install_) {
     if (!GetBool(installer::master_preferences::kChrome, &chrome_))
       chrome_ = false;
   } else {
-    chrome_ = true;
+    // If chrome-frame is on the command line however, we only install CF.
+    chrome_ = !chrome_frame_;
   }
 }