Introduce net::HttpServerPropertiesManager to manage server-specific properties.

chrome/app/policy/policy_templates.json

Index: chrome/app/policy/policy_templates.json
===================================================================
--- chrome/app/policy/policy_templates.json	(revision 99284)
+++ chrome/app/policy/policy_templates.json	(working copy)
@@ -94,7 +94,7 @@
 #   persistent IDs for all fields (but not for groups!) are needed. These are
 #   specified by the 'id' keys of each policy. NEVER CHANGE EXISTING IDs,
 #   because doing so would break the deployed wire format!
-#   For your editing convenience: highest ID currently used: 103
+#   For your editing convenience: highest ID currently used: 104
 #
 # Placeholders:
 #   The following placeholder strings are automatically substituted:
@@ -240,6 +240,16 @@
       'desc': '''Disables use of the SPDY protocol in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.''',
     },
     {
+      'name': 'SpdyServers',
+      'type': 'string',
+      'supported_on': ['chrome.*:8-', 'chrome_os:0.11-'],
+      'features': {'dynamic_refresh': 1},
+      'example_value': 'https://www.google.com',
+      'id': 104,
+      'caption': '''SPDY servers''',
+      'desc': '''List of SPDY servers in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.''',
+    },
+    {
       'name': 'DisabledSchemes',
       'type': 'list',
       'supported_on': ['chrome.*:12-', 'chrome_os:0.11-'],