Move Extension Location and Type enums to Manifest, and move InstallWarning to its own file.

chrome/browser/extensions/pending_extension_info.cc

Index: chrome/browser/extensions/pending_extension_info.cc
diff --git a/chrome/browser/extensions/pending_extension_info.cc b/chrome/browser/extensions/pending_extension_info.cc
index bdf4fad38263fd27f6e7ca1b5d599c6f6798ba0b..6fc0adc9d247a9549417985f2c4ddcc3c42b039a 100644
--- a/chrome/browser/extensions/pending_extension_info.cc
+++ b/chrome/browser/extensions/pending_extension_info.cc
@@ -15,7 +15,7 @@ PendingExtensionInfo::PendingExtensionInfo(
     ShouldAllowInstallPredicate should_allow_install,
     bool is_from_sync,
     bool install_silently,
-    Extension::Location install_source)
+    Manifest::Location install_source)
     : id_(id),
       update_url_(update_url),
       version_(version),
@@ -30,7 +30,7 @@ PendingExtensionInfo::PendingExtensionInfo()
       should_allow_install_(NULL),
       is_from_sync_(true),
       install_silently_(false),
-      install_source_(Extension::INVALID) {}
+      install_source_(Manifest::INVALID_LOCATION) {}
 
 bool PendingExtensionInfo::operator==(const PendingExtensionInfo& rhs) const {
   return id_ == rhs.id_;
@@ -55,8 +55,8 @@ int PendingExtensionInfo::CompareTo(const PendingExtensionInfo& other) const {
 
   // Different install sources; |this| has higher precedence if
   // |install_source_| is the higher priority source.
-  Extension::Location higher_priority_source =
-      Extension::GetHigherPriorityLocation(
+  Manifest::Location higher_priority_source =
+      Manifest::GetHigherPriorityLocation(
           install_source_, other.install_source_);
 
   return higher_priority_source == install_source_ ? 1 : -1;