AU: Remove support for old-style updates.

This code is basically untested, unused and a security risk. So, remove...

BUG=chromium-os:12542
TEST=unit tests, tested VM update

Change-Id: Ibed0582b09497acef9debdf88658cddc2b5cecce
Reviewed-on: http://gerrit.chromium.org/gerrit/8728
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Ready: Darin Petkov <petkov@chromium.org>
diff --git a/omaha_request_action_unittest.cc b/omaha_request_action_unittest.cc
index 6f4df63..776e5e7 100644
--- a/omaha_request_action_unittest.cc
+++ b/omaha_request_action_unittest.cc
@@ -257,7 +257,6 @@
   EXPECT_EQ("1.2.3.4", response.display_version);
   EXPECT_EQ("http://code/base", response.codebase);
   EXPECT_EQ("http://more/info", response.more_info_url);
-  EXPECT_TRUE(response.is_delta);
   EXPECT_EQ("HASH1234=", response.hash);
   EXPECT_EQ(123, response.size);
   EXPECT_FALSE(response.needs_admin);
@@ -381,6 +380,7 @@
                               "status=\"ok\"/><updatecheck "
                               "DisplayVersion=\"1.2.3.4\" "
                               "Prompt=\"false\" "
+                              "IsDelta=\"true\" "
                               "codebase=\"http://code/base\" hash=\"foo\" "
                               "sha256=\"HASH1234=\" needsadmin=\"true\" "
                               "size=\"123\" "
@@ -394,7 +394,6 @@
   EXPECT_EQ("1.2.3.4", response.display_version);
   EXPECT_EQ("http://code/base", response.codebase);
   EXPECT_EQ("", response.more_info_url);
-  EXPECT_FALSE(response.is_delta);
   EXPECT_EQ("HASH1234=", response.hash);
   EXPECT_EQ(123, response.size);
   EXPECT_TRUE(response.needs_admin);