Support file system access in DevTools with isolated file system.

content/common/devtools_messages.h

Index: content/common/devtools_messages.h
diff --git a/content/common/devtools_messages.h b/content/common/devtools_messages.h
index a472e3505ffdcf4a542390f94176b8933122638c..627e986dd675f296d9e47205422f79f64b3368be 100644
--- a/content/common/devtools_messages.h
+++ b/content/common/devtools_messages.h
@@ -138,6 +138,17 @@ IPC_MESSAGE_ROUTED2(DevToolsHostMsg_Append,
                     std::string /* url */,
                     std::string /* content */)
 
+// Requests the list of file system pathes where devtools was granted access.
+IPC_MESSAGE_ROUTED0(DevToolsHostMsg_RequestFileSystemPermissions)

[pfeldman, 2012/12/24 19:01:03]

Again, these names do not sound clear.

+
+// Shows select folder dialog and grants devtools file system access permissions
+// to selected folder.
+IPC_MESSAGE_ROUTED0(DevToolsHostMsg_SelectFolderAndGrantFileSystemPermission)
+
+// Revokes devtools file system access permissions by given |file_system_path|.
+IPC_MESSAGE_ROUTED1(DevToolsHostMsg_RevokeFileSystemPermission,
+                    std::string /* file_system_path */)
+
 // Updates agent runtime state stored in devtools manager in order to support
 // cross-navigation instrumentation.
 IPC_MESSAGE_ROUTED1(DevToolsHostMsg_SaveAgentRuntimeState,