Introduce ViewRoot forwarding input/view events to native

content/browser/renderer_host/render_widget_host_view_android.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_view_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 429 matching lines @@
     : host_(widget_host),
       begin_frame_source_(nullptr),
       outstanding_begin_frame_requests_(0),
       is_showing_(!widget_host->is_hidden()),
       is_window_visible_(true),
       is_window_activity_started_(true),
       is_showing_overscroll_glow_(true),
       content_view_core_(nullptr),
       ime_adapter_android_(this),
       cached_background_color_(SK_ColorWHITE),
+      view_(this),
       last_compositor_frame_sink_id_(kUndefinedCompositorFrameSinkId),
       gesture_provider_(ui::GetGestureProviderConfig(
                             ui::GestureProviderConfigType::CURRENT_PLATFORM),
                         this),
       stylus_text_selector_(this),
       using_browser_compositor_(CompositorImpl::IsInitialized()),
       synchronous_compositor_client_(nullptr),
       frame_evictor_(new DelegatedFrameEvictor(this)),
       locks_on_frame_count_(0),
       observing_root_window_(false),
@@ skipping 357 matching lines @@
 
 void RenderWidgetHostViewAndroid::SetNeedsBeginFrames(bool needs_begin_frames) {
   TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::SetNeedsBeginFrames",
                "needs_begin_frames", needs_begin_frames);
   if (needs_begin_frames)
     AddBeginFrameRequest(PERSISTENT_BEGIN_FRAME);
   else
     ClearBeginFrameRequest(PERSISTENT_BEGIN_FRAME);
 }
 
+bool RenderWidgetHostViewAndroid::OnTouchEvent(
+    const ui::MotionEventAndroid& event,
+    bool is_touch_handle_event) {
+  return is_touch_handle_event ? ProcessTouchHandleEvent(event)
+                               : ProcessTouchEvent(event);
+}
+
 void RenderWidgetHostViewAndroid::OnStartContentIntent(
     const GURL& content_url, bool is_main_frame) {
   if (content_view_core_)
     content_view_core_->StartContentIntent(content_url, is_main_frame);
 }
 
 void RenderWidgetHostViewAndroid::OnSmartClipDataExtracted(
     const base::string16& text,
     const base::string16& html,
     const gfx::Rect rect) {
   if (content_view_core_)
     content_view_core_->OnSmartClipDataExtracted(text, html, rect);
 }
 
-bool RenderWidgetHostViewAndroid::OnTouchEvent(
+bool RenderWidgetHostViewAndroid::ProcessTouchEvent(
     const ui::MotionEvent& event) {
   if (!host_)
     return false;
 
   ComputeEventLatencyOSTouchHistograms(event);
 
   // If a browser-based widget consumes the touch event, it's critical that
   // touch event interception be disabled. This avoids issues with
   // double-handling for embedder-detected gestures like side swipe.
   if (selection_controller_ &&
@@ skipping 21 matching lines @@
   // Send a proactive BeginFrame for this vsync to reduce scroll latency for
   // scroll-inducing touch events. Note that Android's Choreographer ensures
   // that BeginFrame requests made during ACTION_MOVE dispatch will be honored
   // in the same vsync phase.
   if (observing_root_window_ && result.moved_beyond_slop_region)
     AddBeginFrameRequest(BEGIN_FRAME);
 
   return true;
 }
 
-bool RenderWidgetHostViewAndroid::OnTouchHandleEvent(
+bool RenderWidgetHostViewAndroid::ProcessTouchHandleEvent(
     const ui::MotionEvent& event) {
   return selection_controller_ &&
          selection_controller_->WillHandleTouchEvent(event);
 }
 
 void RenderWidgetHostViewAndroid::ResetGestureDetection() {
   const ui::MotionEvent* current_down_event =
       gesture_provider_.GetCurrentDownEvent();
   if (!current_down_event) {
     // A hard reset ensures prevention of any timer-based events that might fire
@@ skipping 1189 matching lines @@
   if (!compositor)
     return;
 
   overscroll_controller_ = base::MakeUnique<OverscrollControllerAndroid>(
       overscroll_refresh_handler, compositor,
       ui::GetScaleFactorForNativeView(GetNativeView()));
   is_showing_overscroll_glow_ = true;
 }
 
 }  // namespace content