Differential updates for components.

chrome/installer/util/util_constants.h

Index: chrome/installer/util/util_constants.h
diff --git a/chrome/installer/util/util_constants.h b/chrome/installer/util/util_constants.h
index bb7b6935c3a33c8db1d1fcf4a59cdb33270975a7..3f9a496a5f13a16e2281d664a1514a82dcedbcc3 100644
--- a/chrome/installer/util/util_constants.h
+++ b/chrome/installer/util/util_constants.h
@@ -80,12 +80,14 @@ enum InstallStatus {
   INVALID_STATE_FOR_OPTION,    // 47. A non-install option was called with an
                                // invalid installer state.
   WAIT_FOR_EXISTING_FAILED,    // 48. OS error waiting for existing setup.exe.
+  PATCH_INVALID_ARGUMENTS,     // 49. The arguments of --patch were missing or
+                               // they were invalid for any reason.
   // Friendly reminder: note the COMPILE_ASSERT below.
 };
 
 
 // Existing InstallStatus values must not change.  Always add to the end.
-COMPILE_ASSERT(installer::WAIT_FOR_EXISTING_FAILED == 48,
+COMPILE_ASSERT(installer::PATCH_INVALID_ARGUMENTS == 49,
                dont_change_enum);
 
 // The type of an update archive.
@@ -128,6 +130,7 @@ COMPILE_ASSERT(DEFERRING_TO_HIGHER_VERSION == 18,
                never_ever_ever_change_InstallerStage_values_bang);
 
 namespace switches {
+
 extern const char kAutoLaunchChrome[];
 extern const char kChrome[];
 extern const char kChromeAppHostDeprecated[];  // TODO(huangs): Remove by M27.
@@ -177,6 +180,11 @@ extern const char kInactiveUserToast[];
 extern const char kSystemLevelToast[];
 extern const char kExperimentGroup[];
 extern const char kToastResultsKey[];
+extern const char kPatch[];
+extern const char kInputFile[];
+extern const char kPatchFile[];
+extern const char kOutputFile[];
+
 }  // namespace switches
 
 extern const wchar_t kActiveSetupExe[];
@@ -237,6 +245,16 @@ extern const wchar_t kChromeChannelStable[];
 
 extern const size_t kMaxAppModelIdLength;
 
+// The range of error values for the installer, Courgette, and bsdiff is
+// overlapping. These offset values disambiguate between different sets
+// of errors by shifting the values up with the specified offset.
+const int kCourgetteErrorOffset = 300;
+const int kBsdiffErrorOffset = 600;
+
+// Arguments to --patch switch
+extern const char kCourgette[];
+extern const char kBsdiff[];
+
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_