Remove VIEW_TYPE_WEB_CONTENTS and make default view type INVALID.

chrome/common/chrome_view_type.h

Index: chrome/common/chrome_view_type.h
diff --git a/chrome/common/chrome_view_type.h b/chrome/common/chrome_view_type.h
index 1dc2044fb175e15ad5ea18d864f74ef7beda5ee0..7fdeeedea67f511d8bfcbe34fb36c2f67837c4af 100644
--- a/chrome/common/chrome_view_type.h
+++ b/chrome/common/chrome_view_type.h
@@ -10,31 +10,36 @@
 
 namespace chrome {
 
-// Indicates different types of views.
+// Icky RTTI used by a few systems to distinguish the host type of a given
+// RenderViewHost or WebContents.
+//
+// TODO(aa): Remove this and teach those systems to keep track of their own
+// data.
 enum ViewType {
   VIEW_TYPE_CHROME_START = content::VIEW_TYPE_CONTENT_END,
 
+  VIEW_TYPE_APP_SHELL,
   VIEW_TYPE_BACKGROUND_CONTENTS,
   VIEW_TYPE_EXTENSION_BACKGROUND_PAGE,
-  VIEW_TYPE_EXTENSION_POPUP,
+  VIEW_TYPE_EXTENSION_DIALOG,
   VIEW_TYPE_EXTENSION_INFOBAR,
+  VIEW_TYPE_EXTENSION_POPUP,
   VIEW_TYPE_NOTIFICATION,
-  VIEW_TYPE_EXTENSION_DIALOG,
-  VIEW_TYPE_APP_SHELL,
   VIEW_TYPE_PANEL,
+  VIEW_TYPE_TAB_CONTENTS,
 };
 
 // Constant strings corresponding to the Type enumeration values.  Used
 // when converting JS arguments.
-extern const char kViewTypeTabContents[];
+extern const char kViewTypeAll[];
+extern const char kViewTypeAppShell[];
 extern const char kViewTypeBackgroundPage[];
-extern const char kViewTypePopup[];
-extern const char kViewTypePanel[];
+extern const char kViewTypeExtensionDialog[];
 extern const char kViewTypeInfobar[];
 extern const char kViewTypeNotification[];
-extern const char kViewTypeExtensionDialog[];
-extern const char kViewTypeAppShell[];
-extern const char kViewTypeAll[];
+extern const char kViewTypePanel[];
+extern const char kViewTypePopup[];
+extern const char kViewTypeTabContents[];
 
 }  // namespace chrome