<webview>: Remove broken captureVisibleRegion code until feature is properly supported

content/browser/frame_host/render_widget_host_view_guest.cc

 // Copyright 2014 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 "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/frame_host/render_widget_host_view_guest.h"
@@ skipping 332 matching lines @@
   if (!rwhv)
     return;
   ViewHostMsg_SelectionBounds_Params guest_params(params);
   guest_params.anchor_rect.set_origin(
       guest_->GetScreenCoordinates(params.anchor_rect.origin()));
   guest_params.focus_rect.set_origin(
       guest_->GetScreenCoordinates(params.focus_rect.origin()));
   rwhv->SelectionBoundsChanged(guest_params);
 }
 
-void RenderWidgetHostViewGuest::CopyFromCompositingSurface(
-    const gfx::Rect& src_subrect,
-    const gfx::Size& dst_size,
-    CopyFromCompositingSurfaceCallback& callback,
-    const SkColorType color_type) {
-  CHECK(guest_);
-  guest_->CopyFromCompositingSurface(src_subrect, dst_size, callback);
-}
-
 void RenderWidgetHostViewGuest::SetBackgroundColor(SkColor color) {
   // Content embedders can toggle opaque backgrounds through this API.
   // We plumb the value here so that BrowserPlugin updates its compositing
   // state in response to this change. We also want to preserve this flag
   // after recovering from a crash so we let BrowserPluginGuest store it.
   if (!guest_)
     return;
   RenderWidgetHostViewBase::SetBackgroundColor(color);
   bool opaque = GetBackgroundOpaque();
   host_->SetBackgroundOpaque(opaque);
@@ skipping 222 matching lines @@
   }
 
   if (blink::WebInputEvent::isGestureEventType(event->type)) {
     host_->ForwardGestureEvent(
         *static_cast<const blink::WebGestureEvent*>(event));
     return;
   }
 }
 
 }  // namespace content