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

chrome/common/extensions/extension_builder.cc

Index: chrome/common/extensions/extension_builder.cc
diff --git a/chrome/common/extensions/extension_builder.cc b/chrome/common/extensions/extension_builder.cc
index 2a446075c73d669caf45be03cf22cf100e243977..93be0c5c2fc2173f119e27d0fa3fdebd1fdcd899 100644
--- a/chrome/common/extensions/extension_builder.cc
+++ b/chrome/common/extensions/extension_builder.cc
@@ -9,7 +9,7 @@
 namespace extensions {
 
 ExtensionBuilder::ExtensionBuilder()
-    : location_(Extension::LOAD),
+    : location_(Manifest::LOAD),
       flags_(Extension::NO_FLAGS) {
 }
 ExtensionBuilder::~ExtensionBuilder() {}
@@ -32,7 +32,7 @@ ExtensionBuilder& ExtensionBuilder::SetPath(const FilePath& path) {
   return *this;
 }
 
-ExtensionBuilder& ExtensionBuilder::SetLocation(Extension::Location location) {
+ExtensionBuilder& ExtensionBuilder::SetLocation(Manifest::Location location) {
   location_ = location;
   return *this;
 }