Let the browser know the end of fling

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 2053 matching lines @@
 IPC_MESSAGE_ROUTED2(ViewHostMsg_SwapCompositorFrame,
                     uint32 /* output_surface_id */,
                     cc::CompositorFrame /* frame */)
 
 // Sent by the compositor when input scroll events are dropped due to bounds
 // restricions on the root scroll offset.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_DidOverscroll,
                     gfx::Vector2dF /* accumulated_overscroll */,
                     gfx::Vector2dF /* current_fling_velocity */)
 
+// Sent by the compositor when a flinging animation is stopped.
+IPC_MESSAGE_ROUTED0(ViewHostMsg_DidStopFlinging)

[jdduke (slow), 2014/01/09 20:07:14]

I guess I should have made ViewHostMsg_DidOverscroll an
InputHostMsg_DidOverscroll, but I could probably move these later if necessary.

+
 // Reply to a snapshot request containing whether snapshotting succeeded and the
 // SkBitmap if it succeeded.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_Snapshot,
                     bool, /* success */
                     SkBitmap /* bitmap */)
 
 //---------------------------------------------------------------------------
 // Request for cryptographic operation messages:
 // These are messages from the renderer to the browser to perform a
 // cryptographic operation.
@@ skipping 255 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.