Revert 124453 - WebWidgetClient::screenInfo() no longer does a synchronous IPC.

content/common/view_messages.h

 // Copyright (c) 2012 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/content_export.h"
@@ skipping 663 matching lines @@
   IPC_STRUCT_MEMBER(int, opener_route_id)
 
   // Whether the RenderView should initially be swapped out.
   IPC_STRUCT_MEMBER(bool, swapped_out)
 
   // The initial page ID to use for this view, which must be larger than any
   // existing navigation that might be loaded in the view.  Page IDs are unique
   // to a view and are only updated by the renderer after this initial value.
   IPC_STRUCT_MEMBER(int32, next_page_id)
 
-  // The properties of the screen associated with the view.
-  IPC_STRUCT_MEMBER(WebKit::WebScreenInfo, screen_info)
-
   // The name of the channel with which a guest talks to its embedder.
   // If this newly created RenderView has no embedder this string will be
   // empty.
   IPC_STRUCT_MEMBER(std::string, embedder_channel_name)
 
   // The identifier in the embedder render process of the container hosting this
   // guest RenderView. The embedder_channel_name and embedder_container_id
   // together uniquely identify a browser plugin instance.
   IPC_STRUCT_MEMBER(int, embedder_container_id)
 
@@ skipping 1059 matching lines @@
 
 #if defined(OS_MACOSX)
 // Request that the browser load a font into shared memory for us.
 IPC_SYNC_MESSAGE_CONTROL1_3(ViewHostMsg_LoadFont,
                            FontDescriptor /* font to load */,
                            uint32 /* buffer size */,
                            base::SharedMemoryHandle /* font data */,
                            uint32 /* font id */)
 #endif
 
+// Returns WebScreenInfo corresponding to the view.
+// 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_GetScreenInfo,
+                           gfx::NativeViewId /* view */,
+                           WebKit::WebScreenInfo /* results */)
+
 // Send the tooltip text for the current mouse position to the browser.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTooltipText,
                     string16 /* tooltip text string */,
                     WebKit::WebTextDirection /* text direction hint */)
 
 // Notification that the text selection has changed.
 // Note: The secound parameter is the character based offset of the string16
 // text in the document.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_SelectionChanged,
                     string16 /* text covers the selection range */,
@@ skipping 309 matching lines @@
 // (according to the value of is_hung). The browser can give the user the
 // option of killing the plugin.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_PepperPluginHung,
                     int /* plugin_child_id */,
                     FilePath /* path */,
                     bool /* is_hung */)
 
 // Screen was rotated. Dispatched to the onorientationchange javascript API.
 IPC_MESSAGE_ROUTED1(ViewMsg_OrientationChangeEvent,
                     int /* orientation */)