Replace bools in extension creation with flags.

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index e029c7a02b70112ecc386c12d317b63a38898e0c..6b40f1561319df0f1136fbdcb2c9a60055a0c811 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -114,21 +114,31 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
     const int message_id;
   };
 
-  // |strict_error_checks| enables extra error checking, such as
-  // checks that URL patterns do not contain ports.  This error
-  // checking may find an error that a previous version of
-  // chrome did not flag.  To avoid errors in installed extensions
-  // when chrome is upgraded, strict error checking is only enabled
-  // when loading extensions as a developer would (such as loading
-  // an unpacked extension), or when loading an extension that is
-  // tied to a specific version of chrome (such as a component
-  // extension).  Most callers will set |strict_error_checks| to
-  // Extension::ShouldDoStrictErrorChecking(location).
+  enum InitFromValueFlags {
+    NO_FLAGS = 0,
+
+    // Usually, the id of an extension is generated by the "key" property of
+    // its manifest, but if |REQUIRE_KEY| is not set, a temporary ID will be
+    // generated based on the path.
+    REQUIRE_KEY = 1 << 0,
+
+    // |STRICT_ERROR_CHECKS| enables extra error checking, such as
+    // checks that URL patterns do not contain ports.  This error
+    // checking may find an error that a previous version of
+    // Chrome did not flag.  To avoid errors in installed extensions
+    // when Chrome is upgraded, strict error checking is only enabled
+    // when loading extensions as a developer would (such as loading
+    // an unpacked extension), or when loading an extension that is
+    // tied to a specific version of Chrome (such as a component
+    // extension).  Most callers will set the |STRICT_ERROR_CHECKS| bit when
+    // Extension::ShouldDoStrictErrorChecking(location) returns true.
+    STRICT_ERROR_CHECKS = 1 << 1,
+  };
+
   static scoped_refptr<Extension> Create(const FilePath& path,
                                          Location location,
                                          const DictionaryValue& value,
-                                         bool require_key,
-                                         bool strict_error_checks,
+                                         int flags,
                                          std::string* error);
 
   // Return the update url used by gallery/webstore extensions.
@@ -539,11 +549,8 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   ~Extension();
 
   // Initialize the extension from a parsed manifest.
-  // Usually, the id of an extension is generated by the "key" property of
-  // its manifest, but if |require_key| is |false|, a temporary ID will be
-  // generated based on the path.
-  bool InitFromValue(const DictionaryValue& value, bool require_key,
-                     bool strict_error_checks, std::string* error);
+  bool InitFromValue(const DictionaryValue& value, int flags,
+                     std::string* error);
 
   // Helper function for implementing HasCachedImage/GetCachedImage. A return
   // value of NULL means there is no matching image cached (we allow caching an