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

chrome/browser/extensions/extension_webkit_preferences.cc

Index: chrome/browser/extensions/extension_webkit_preferences.cc
diff --git a/chrome/browser/extensions/extension_webkit_preferences.cc b/chrome/browser/extensions/extension_webkit_preferences.cc
index 2b79fa656d272459dd6c8f78d2856bcc94c5659c..3413442671effa4f3081f0aefaa705dcadc7d7b4 100644
--- a/chrome/browser/extensions/extension_webkit_preferences.cc
+++ b/chrome/browser/extensions/extension_webkit_preferences.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest.h"
 #include "webkit/glue/webpreferences.h"
 
 namespace extension_webkit_preferences {
@@ -53,7 +54,7 @@ void SetPreferences(const extensions::Extension* extension,
   // sometimes loaded with chrome-extension: URLs - we should expect the
   // performance characteristics to be similar in both cases.
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-  if (extension->location() == extensions::Extension::COMPONENT &&
+  if (extension->location() == extensions::Manifest::COMPONENT &&
       !command_line.HasSwitch(switches::kAllowWebUICompositing)) {
     webkit_prefs->accelerated_compositing_enabled = false;
     webkit_prefs->accelerated_2d_canvas_enabled = false;