Reland: Remove some dead app host code.

chrome/installer/util/google_update_util.cc

Index: chrome/installer/util/google_update_util.cc
diff --git a/chrome/installer/util/google_update_util.cc b/chrome/installer/util/google_update_util.cc
index c7de7a55c8c35ee9903b9bd5f4f2848b06880837..d3013bac30dcce654d7bc51174217ed14b06259b 100644
--- a/chrome/installer/util/google_update_util.cc
+++ b/chrome/installer/util/google_update_util.cc
@@ -4,28 +4,19 @@
 
 #include "chrome/installer/util/google_update_util.h"
 
-#include <algorithm>
-#include <map>
-#include <utility>
-#include <vector>
-
 #include "base/command_line.h"
-#include "base/environment.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
 #include "base/strings/string16.h"
-#include "base/strings/string_split.h"
 #include "base/time/time.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
-#include "chrome/installer/launcher_support/chrome_launcher_support.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "chrome/installer/util/google_update_settings.h"
@@ -41,9 +32,6 @@ namespace {
 
 const int kGoogleUpdateTimeoutMs = 20 * 1000;
 
-const char kEnvVariableUntrustedData[] = "GoogleUpdateUntrustedData";
-const int kUntrustedDataMaxLength = 4096;
-
 // Returns true if Google Update is present at the given level.
 bool IsGoogleUpdatePresent(bool system_install) {
   // Using the existence of version key in the registry to decide.
@@ -120,73 +108,6 @@ bool LaunchProcessAndWaitWithTimeout(const base::string16& cmd_string,
   return success;
 }
 
-bool IsNotPrintable(unsigned char c) {
-  return c < 32 || c >= 127;
-}
-
-// Returns whether or not |s| consists of printable characters.
-bool IsStringPrintable(const std::string& s) {
-  return std::find_if(s.begin(), s.end(), IsNotPrintable) == s.end();
-}
-
-bool IsIllegalUntrustedDataKeyChar(unsigned char c) {
-  return !(c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z' ||
-           c >= '0' && c <= '9' || c == '-' || c == '_' || c == '$');
-}
-
-// Returns true if |key| from untrusted data is valid.
-bool IsUntrustedDataKeyValid(const std::string& key) {
-  return std::find_if(key.begin(), key.end(), IsIllegalUntrustedDataKeyChar)
-      == key.end();
-}
-
-// Parses |data_string| as key-value pairs and overwrites |untrusted_data| with
-// the result. Returns true if the data could be parsed.
-bool ParseUntrustedData(
-    const std::string& data_string,
-    std::map<std::string, std::string>* untrusted_data) {
-  DCHECK(untrusted_data);
-  if (data_string.length() > kUntrustedDataMaxLength ||
-      !IsStringPrintable(data_string)) {
-    LOG(ERROR) << "Invalid value in untrusted data string.";
-    return false;
-  }
-
-  VLOG(1) << "Untrusted data string: " << data_string;
-
-  std::vector<std::pair<std::string, std::string> > kv_pairs;
-  if (!base::SplitStringIntoKeyValuePairs(data_string, '=', '&', &kv_pairs)) {
-    LOG(ERROR) << "Failed to parse untrusted data: " << data_string;
-    return false;
-  }
-
-  untrusted_data->clear();
-  std::vector<std::pair<std::string, std::string> >::const_iterator it;
-  for (it = kv_pairs.begin(); it != kv_pairs.end(); ++it) {
-    const std::string& key(it->first);
-    // TODO(huangs): URL unescape |value|.
-    const std::string& value(it->second);
-    if (IsUntrustedDataKeyValid(key) && IsStringPrintable(value))
-      (*untrusted_data)[key] = value;
-    else
-      LOG(ERROR) << "Illegal character found in untrusted data.";
-  }
-  return true;
-}
-
-// Reads and parses untrusted data passed from Google Update as key-value
-// pairs, then overwrites |untrusted_data_map| with the result.
-// Returns true if data are successfully read.
-bool GetGoogleUpdateUntrustedData(
-    std::map<std::string, std::string>* untrusted_data) {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  std::string data_string;
-  if (!env || !env->GetVar(kEnvVariableUntrustedData, &data_string))
-    return false;
-
-  return ParseUntrustedData(data_string, untrusted_data);
-}
-
 }  // namespace
 
 bool EnsureUserLevelGoogleUpdatePresent() {
@@ -266,25 +187,4 @@ void ElevateIfNeededToReenableUpdates() {
   }
 }
 
-std::string GetUntrustedDataValue(const std::string& key) {
-  std::map<std::string, std::string> untrusted_data;
-  if (GetGoogleUpdateUntrustedData(&untrusted_data)) {
-    std::map<std::string, std::string>::const_iterator data_it(
-        untrusted_data.find(key));
-    if (data_it != untrusted_data.end())
-      return data_it->second;
-  }
-
-  return std::string();
-}
-
-std::string GetUntrustedDataValueFromTag(const std::string& tag,
-                                         const std::string& key) {
-  std::map<std::string, std::string> untrusted_data;
-  if (ParseUntrustedData(tag, &untrusted_data))
-    return untrusted_data[key];
-
-  return std::string();
-}
-
 }  // namespace google_update