Add a path for a web page to request the enumeration of a directory. This, t...

content/common/view_messages.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
@@ skipping 1010 matching lines @@
 IPC_MESSAGE_ROUTED0(ViewMsg_UpdateTargetURL_ACK)
 
 
 // Sets the alternate error page URL (link doctor) for the renderer process.
 IPC_MESSAGE_ROUTED1(ViewMsg_SetAltErrorPageURL,
                     GURL)
 
 IPC_MESSAGE_ROUTED1(ViewMsg_RunFileChooserResponse,
                     std::vector<FilePath> /* selected files */)
 
+// Provides the results of directory enumeration.
+IPC_MESSAGE_ROUTED2(ViewMsg_EnumerateDirectoryResponse,
+                    int /* request_id */,
+                    std::vector<FilePath> /* files_in_directory */)
+
 // When a renderer sends a ViewHostMsg_Focus to the browser process,
 // the browser has the option of sending a ViewMsg_CantFocus back to
 // the renderer.
 IPC_MESSAGE_ROUTED0(ViewMsg_CantFocus)
 
 // Instructs the renderer to invoke the frame's shouldClose method, which
 // runs the onbeforeunload event handler.  Expects the result to be returned
 // via ViewHostMsg_ShouldClose.
 IPC_MESSAGE_ROUTED0(ViewMsg_ShouldClose)
 
@@ skipping 592 matching lines @@
 
 // Notification that the text selection has changed.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SelectionChanged,
                     std::string /* currently selected text */)
 
 // Asks the browser to display the file chooser.  The result is returned in a
 // ViewHost_RunFileChooserResponse message.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_RunFileChooser,
                     ViewHostMsg_RunFileChooser_Params)
 
+// Asks the browser to enumerate a directory.  This is equivalent to running
+// the file chooser in directory-enumeration mode and having the user select
+// the given directory.  The result is returned in a
+// ViewMsg_EnumerateDirectoryResponse message.
+IPC_MESSAGE_ROUTED2(ViewHostMsg_EnumerateDirectory,
+                    int /* request_id */,
+                    FilePath /* file_path */)
+
 // Tells the browser to move the focus to the next (previous if reverse is
 // true) focusable element.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_TakeFocus,
                     bool /* reverse */)
 
 // Returns the window location of the window this widget is embeded.
 // TODO(shess): Provide a mapping from reply_msg->routing_id() to
 // HWND so that we can eliminate the NativeViewId parameter.
 IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_GetRootWindowRect,
                            gfx::NativeViewId /* window */,
@@ skipping 214 matching lines @@
 // enable or disable spdy.  Used for debugging/testing/benchmarking.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_EnableSpdy,
                      bool /* enable */)
 
 // Message sent from the renderer to the browser to request that the browser
 // cache |data| associated with |url|.
 IPC_MESSAGE_CONTROL3(ViewHostMsg_DidGenerateCacheableMetadata,
                      GURL /* url */,
                      double /* expected_response_time */,
                      std::vector<char> /* data */)