Reland: Implement Aura side of unified touch text selection for contents

content/browser/web_contents/web_contents_view_aura.cc

Index: content/browser/web_contents/web_contents_view_aura.cc
diff --git a/content/browser/web_contents/web_contents_view_aura.cc b/content/browser/web_contents/web_contents_view_aura.cc
index da9af68e420cdc09215582c10653ba5f9c4bb620..b7317b8fab1a7cde405948e71c53b69cc5eff20c 100644
--- a/content/browser/web_contents/web_contents_view_aura.cc
+++ b/content/browser/web_contents/web_contents_view_aura.cc
@@ -24,7 +24,7 @@
 #include "content/browser/web_contents/aura/overscroll_navigation_overlay.h"
 #include "content/browser/web_contents/aura/shadow_layer_delegate.h"
 #include "content/browser/web_contents/aura/window_slider.h"
-#include "content/browser/web_contents/touch_editable_impl_aura.h"
+#include "content/browser/web_contents/touch_selection_controller_aura_client_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/notification_observer.h"
@@ -68,6 +68,7 @@
 #include "ui/gfx/image/image_png_rep.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/screen.h"
+#include "ui/touch_selection/touch_selection_controller_aura.h"
 #include "ui/wm/public/drag_drop_client.h"
 #include "ui/wm/public/drag_drop_delegate.h"
 
@@ -616,8 +617,12 @@ class WebContentsViewAura::WindowObserver
                              const gfx::Rect& new_bounds) override {
     if (window == host_window_ || window == view_->window_) {
       SendScreenRects();
-      if (view_->touch_editable_)
-        view_->touch_editable_->UpdateEditingController();
+      if (old_bounds.origin() != new_bounds.origin()) {
+        ui::TouchSelectionControllerAura* selection_controller =
+            view_->GetSelectionController();
+        if (selection_controller)
+          selection_controller->OnWindowMoved();
+      }
 #if defined(OS_WIN)
     } else {
       UpdateConstrainedWindows(NULL);
@@ -736,7 +741,6 @@ WebContentsViewAura::WebContentsViewAura(
       overscroll_change_brightness_(false),
       current_overscroll_gesture_(OVERSCROLL_NONE),
       completed_overscroll_gesture_(OVERSCROLL_NONE),
-      touch_editable_(TouchEditableImplAura::Create()),
       is_or_was_visible_(false) {
 }
 
@@ -755,12 +759,6 @@ WebContentsViewAura::~WebContentsViewAura() {
   window_.reset();
 }
 
-void WebContentsViewAura::SetTouchEditableForTest(
-    TouchEditableImplAura* touch_editable) {
-  touch_editable_.reset(touch_editable);
-  AttachTouchEditableToRenderView();
-}
-
 void WebContentsViewAura::SizeChangedCommon(const gfx::Size& size) {
   if (web_contents_->GetInterstitialPage())
     web_contents_->GetInterstitialPage()->SetSize(size);
@@ -974,20 +972,19 @@ void WebContentsViewAura::UpdateOverscrollWindowBrightness(float delta_x) {
   window->layer()->SetLayerBrightness(brightness);
 }
 
-void WebContentsViewAura::AttachTouchEditableToRenderView() {
-  if (!touch_editable_)
-    return;
-  RenderWidgetHostViewAura* rwhva = ToRenderWidgetHostViewAura(
-      web_contents_->GetRenderWidgetHostView());
-  touch_editable_->AttachToView(rwhva);
-}
-
 void WebContentsViewAura::OverscrollUpdateForWebContentsDelegate(
     float delta_y) {
   if (web_contents_->GetDelegate() && IsScrollEndEffectEnabled())
     web_contents_->GetDelegate()->OverscrollUpdate(delta_y);
 }
 
+ui::TouchSelectionControllerAura*
+WebContentsViewAura::GetSelectionController() {
+  RenderWidgetHostViewAura* view =
+      ToRenderWidgetHostViewAura(web_contents_->GetRenderWidgetHostView());
+  return view ? view->selection_controller() : nullptr;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, WebContentsView implementation:
 
@@ -1127,6 +1124,10 @@ RenderWidgetHostViewBase* WebContentsViewAura::CreateViewForWidget(
 
   RenderWidgetHostViewAura* view =
       new RenderWidgetHostViewAura(render_widget_host, is_guest_view_hack);
+  TouchSelectionControllerAuraClientImpl* selection_controller_client =
+      new TouchSelectionControllerAuraClientImpl(view);
+  view->InitSelectionController(selection_controller_client);
+
   view->InitAsChild(NULL);
   GetNativeView()->AddChild(view->GetNativeView());
 
@@ -1149,7 +1150,6 @@ RenderWidgetHostViewBase* WebContentsViewAura::CreateViewForWidget(
     InstallOverscrollControllerDelegate(view);
   }
 
-  AttachTouchEditableToRenderView();
   return view;
 }
 
@@ -1168,7 +1168,6 @@ void WebContentsViewAura::RenderViewCreated(RenderViewHost* host) {
 void WebContentsViewAura::RenderViewSwappedIn(RenderViewHost* host) {
   if (navigation_overlay_.get() && navigation_overlay_->has_window())
     navigation_overlay_->StartObserving();
-  AttachTouchEditableToRenderView();
 }
 
 void WebContentsViewAura::SetOverscrollControllerEnabled(bool enabled) {
@@ -1191,9 +1190,10 @@ void WebContentsViewAura::SetOverscrollControllerEnabled(bool enabled) {
 
 void WebContentsViewAura::ShowContextMenu(RenderFrameHost* render_frame_host,
                                           const ContextMenuParams& params) {
-  if (touch_editable_) {
-    touch_editable_->EndTouchEditing(false);
-  }
+  ui::TouchSelectionControllerAura* selection_controller =
+      GetSelectionController();
+  if (selection_controller)
+    selection_controller->HideAndDisallowShowingAutomatically();
   if (delegate_) {
     delegate_->ShowContextMenu(render_frame_host, params);
     // WARNING: we may have been deleted during the call to ShowContextMenu().
@@ -1212,9 +1212,10 @@ void WebContentsViewAura::StartDragging(
     return;
   }
 
-  if (touch_editable_)
-    touch_editable_->EndTouchEditing(false);
-
+  ui::TouchSelectionControllerAura* selection_controller =
+      GetSelectionController();
+  if (selection_controller)
+    selection_controller->HideAndDisallowShowingAutomatically();
   ui::OSExchangeData::Provider* provider = ui::OSExchangeData::CreateProvider();
   PrepareDragData(drop_data, provider, web_contents_);
 
@@ -1346,9 +1347,12 @@ void WebContentsViewAura::OnOverscrollModeChange(OverscrollMode old_mode,
   if (old_mode == OVERSCROLL_NORTH || old_mode == OVERSCROLL_SOUTH)
     OverscrollUpdateForWebContentsDelegate(0);
 
-  if (new_mode != OVERSCROLL_NONE && touch_editable_)
-    touch_editable_->OverscrollStarted();
-
+  if (new_mode != OVERSCROLL_NONE) {
+    ui::TouchSelectionControllerAura* selection_controller =
+        GetSelectionController();
+    if (selection_controller)
+      selection_controller->OnOverscrollStarted();
+  }
   if (new_mode == OVERSCROLL_NONE ||
       !GetContentNativeView() ||
       ((new_mode == OVERSCROLL_EAST || new_mode == OVERSCROLL_WEST) &&
@@ -1389,8 +1393,10 @@ void WebContentsViewAura::OnImplicitAnimationsCompleted() {
     web_contents_->GetController().GoBack();
     PrepareOverscrollNavigationOverlay();
   } else {
-    if (touch_editable_)
-      touch_editable_->OverscrollCompleted();
+    ui::TouchSelectionControllerAura* selection_controller =
+        GetSelectionController();
+    if (selection_controller)
+      selection_controller->OnOverscrollCompleted();
   }
 
   aura::Window* content = GetContentNativeView();