[Android] Enable composited selection updates

content/renderer/render_widget.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/renderer/render_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 46 matching lines @@
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebDeviceEmulationParams.h"
 #include "third_party/WebKit/public/web/WebPagePopup.h"
 #include "third_party/WebKit/public/web/WebPopupMenu.h"
 #include "third_party/WebKit/public/web/WebPopupMenuInfo.h"
 #include "third_party/WebKit/public/web/WebRange.h"
+#include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/frame_time.h"
 #include "ui/gfx/point_conversions.h"
 #include "ui/gfx/rect_conversions.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/surface/transport_dib.h"
 
@@ skipping 1734 matching lines @@
   *focus = focus_webrect;
   *anchor = anchor_webrect;
 }
 
 void RenderWidget::UpdateSelectionBounds() {
   if (!webwidget_)
     return;
   if (handling_ime_event_)
     return;
 
-  ViewHostMsg_SelectionBounds_Params params;
-  GetSelectionBounds(&params.anchor_rect, &params.focus_rect);
-  if (selection_anchor_rect_ != params.anchor_rect ||
-      selection_focus_rect_ != params.focus_rect) {
-    selection_anchor_rect_ = params.anchor_rect;
-    selection_focus_rect_ = params.focus_rect;
-    webwidget_->selectionTextDirection(params.focus_dir, params.anchor_dir);
-    params.is_anchor_first = webwidget_->isSelectionAnchorFirst();
-    Send(new ViewHostMsg_SelectionBoundsChanged(routing_id_, params));
+  // With composited selection updates, the selection bounds will be reported
+  // directly by the compositor, in which case explicit IPC selection
+  // notifications should be suppressed.
+  if (!blink::WebRuntimeFeatures::isCompositedSelectionUpdateEnabled()) {
+    ViewHostMsg_SelectionBounds_Params params;
+    GetSelectionBounds(&params.anchor_rect, &params.focus_rect);
+    if (selection_anchor_rect_ != params.anchor_rect ||
+        selection_focus_rect_ != params.focus_rect) {
+      selection_anchor_rect_ = params.anchor_rect;
+      selection_focus_rect_ = params.focus_rect;
+      webwidget_->selectionTextDirection(params.focus_dir, params.anchor_dir);
+      params.is_anchor_first = webwidget_->isSelectionAnchorFirst();
+      Send(new ViewHostMsg_SelectionBoundsChanged(routing_id_, params));
+    }
   }
+
 #if defined(OS_MACOSX) || defined(USE_AURA)
   UpdateCompositionInfo(false);
 #endif
 }
 
 // Check blink::WebTextInputType and ui::TextInputType is kept in sync.
 COMPILE_ASSERT(int(blink::WebTextInputTypeNone) == \
                int(ui::TEXT_INPUT_TYPE_NONE), mismatching_enums);
 COMPILE_ASSERT(int(blink::WebTextInputTypeText) == \
                int(ui::TEXT_INPUT_TYPE_TEXT), mismatching_enums);
@@ skipping 340 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content