[DevTools] Touch emulation in content.

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/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 1236 matching lines @@
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Blur)
 
 // Message sent from renderer to the browser when focus changes inside the
 // webpage. The parameter says whether the newly focused element needs
 // keyboard input (true for textfields, text areas and content editable divs).
 IPC_MESSAGE_ROUTED1(ViewHostMsg_FocusedNodeChanged,
     bool /* is_editable_node */)
 
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SetCursor, content::WebCursor)
 
+// Message sent from renderer requesting touch emulation using mouse.
+// Shift-scrolling should be converted to pinch, if |allow_pinch| is true.
+IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTouchEventEmulationEnabled,
+                    bool /* enabled */,
+                    bool /* allow_pinch */)
+
 // Used to set a cookie. The cookie is set asynchronously, but will be
 // available to a subsequent ViewHostMsg_GetCookies request.
 IPC_MESSAGE_CONTROL4(ViewHostMsg_SetCookie,
                      int /* render_frame_id */,
                      GURL /* url */,
                      GURL /* first_party_for_cookies */,
                      std::string /* cookie */)
 
 // Used to get cookies for the given URL. This may block waiting for a
 // previous SetCookie message to be processed.
@@ skipping 605 matching lines @@
 // synchronously (see crbug.com/120597). This IPC message sends the character
 // bounds after every composition change to always have correct bound info.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_ImeCompositionRangeChanged,
                     gfx::Range /* composition range */,
                     std::vector<gfx::Rect> /* character bounds */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.