Implementation of device metrics emulation in render view.

content/browser/renderer_host/render_widget_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 412 matching lines @@
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CompositorSurfaceBuffersSwapped,
                         OnCompositorSurfaceBuffersSwapped)
 #endif
     IPC_MESSAGE_HANDLER_GENERIC(ViewHostMsg_SwapCompositorFrame,
                                 msg_is_ok = OnSwapCompositorFrame(msg))
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidOverscroll, OnOverscrolled)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateIsDelayed, OnUpdateIsDelayed)
     IPC_MESSAGE_HANDLER(ViewHostMsg_BeginSmoothScroll, OnBeginSmoothScroll)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_EmulateDevice, OnEmulateDevice)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Focus, OnFocus)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Blur, OnBlur)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnSetCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputTypeChanged,
                         OnTextInputTypeChanged)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeCancelComposition,
                         OnImeCancelComposition)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidActivateAcceleratedCompositing,
                         OnDidActivateAcceleratedCompositing)
     IPC_MESSAGE_HANDLER(ViewHostMsg_LockMouse, OnLockMouse)
@@ skipping 1218 matching lines @@
   UMA_HISTOGRAM_TIMES("MPArch.RWH_TotalPaintTime", delta);
 }
 
 void RenderWidgetHostImpl::OnBeginSmoothScroll(
     const ViewHostMsg_BeginSmoothScroll_Params& params) {
   if (!view_)
     return;
   smooth_scroll_gesture_controller_.BeginSmoothScroll(view_, params);
 }
 
+void RenderWidgetHostImpl::OnEmulateDevice(bool enabled) {
+  if (view_)
+    view_->EmulateDevice(enabled);
+  Send(new ViewMsg_EmulateDevice_ACK(routing_id_, enabled));
+}
+
 void RenderWidgetHostImpl::OnFocus() {
   // Only RenderViewHost can deal with that message.
   RecordAction(UserMetricsAction("BadMessageTerminate_RWH4"));
   GetProcess()->ReceivedBadMessage();
 }
 
 void RenderWidgetHostImpl::OnBlur() {
   // Only RenderViewHost can deal with that message.
   RecordAction(UserMetricsAction("BadMessageTerminate_RWH5"));
   GetProcess()->ReceivedBadMessage();
@@ skipping 795 matching lines @@
     int process_id = (b->first.second >> 32) & 0xffffffff;
     RenderWidgetHost* rwh =
         RenderWidgetHost::FromID(process_id, routing_id);
     if (!rwh)
       continue;
     RenderWidgetHostImpl::From(rwh)->FrameSwapped(latency_info);
   }
 }
 
 }  // namespace content