Allow browser process to request selection of word around caret

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 980 matching lines @@
 IPC_MESSAGE_ROUTED2(ViewMsg_SwapCompositorFrameAck,
                     uint32 /* output_surface_id */,
                     cc::CompositorFrameAck /* ack */)
 
 // Sent by browser to tell renderer compositor that some resources that were
 // given to the browser in a swap are not being used anymore.
 IPC_MESSAGE_ROUTED2(ViewMsg_ReclaimCompositorResources,
                     uint32 /* output_surface_id */,
                     cc::CompositorFrameAck /* ack */)
 
+IPC_MESSAGE_ROUTED0(ViewMsg_SelectForSearch)

[pedro (no code reviews), 2014/04/30 22:07:08]

Nit: I would call this TapToSelect, since from this particular feature
perspective the search is non-existent.

+
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 // Sent by the renderer when it is creating a new window.  The browser creates
 // a tab for it and responds with a ViewMsg_CreatingNew_ACK.  If route_id is
 // MSG_ROUTING_NONE, the view couldn't be created.
 IPC_SYNC_MESSAGE_CONTROL1_4(ViewHostMsg_CreateWindow,
                             ViewHostMsg_CreateWindow_Params,
                             int /* route_id */,
                             int /* main_frame_route_id */,
@@ skipping 789 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.