Implement surface-based browser process hit testing for Mac and Aura

content/browser/frame_host/render_widget_host_view_child_frame.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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/compositor/surface_utils.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
+#include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "content/browser/renderer_host/render_widget_host_input_event_router.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/browser_plugin_guest_mode.h"
 
 namespace content {
 
 RenderWidgetHostViewChildFrame::RenderWidgetHostViewChildFrame(
     RenderWidgetHost* widget_host)
     : host_(RenderWidgetHostImpl::From(widget_host)),
       use_surfaces_(UseSurfacesEnabled()),
       next_surface_sequence_(1u),
       last_output_surface_id_(0),
       current_surface_scale_factor_(1.f),
       ack_pending_count_(0),
       frame_connector_(nullptr),
       weak_factory_(this) {
-  if (use_surfaces_)
+  if (use_surfaces_) {
     id_allocator_ = CreateSurfaceIdAllocator();
+    if (host_->delegate()->GetInputEventRouter()) {
+      host_->delegate()->GetInputEventRouter()->AddSurfaceIdNamespaceOwner(
+          GetSurfaceIdNamespace(), this);
+    }
+  }
 
   host_->SetView(this);
 }
 
 RenderWidgetHostViewChildFrame::~RenderWidgetHostViewChildFrame() {
   if (!surface_id_.is_null())
     surface_factory_->Destroy(surface_id_);
 }
 
 void RenderWidgetHostViewChildFrame::InitAsChild(
@@ skipping 133 matching lines @@
     frame_connector_->RenderProcessGone();
   Destroy();
 }
 
 void RenderWidgetHostViewChildFrame::Destroy() {
   if (frame_connector_) {
     frame_connector_->set_view(NULL);
     frame_connector_ = NULL;
   }
 
+  if (use_surfaces_ && host_->delegate()->GetInputEventRouter()) {
+    host_->delegate()->GetInputEventRouter()->RemoveSurfaceIdNamespaceOwner(
+        GetSurfaceIdNamespace());
+  }
+
   host_->SetView(NULL);
   host_ = NULL;
   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 void RenderWidgetHostViewChildFrame::SetTooltipText(
     const base::string16& tooltip_text) {
 }
 
 void RenderWidgetHostViewChildFrame::SelectionChanged(
@@ skipping 131 matching lines @@
 void RenderWidgetHostViewChildFrame::UnlockMouse() {
 }
 
 uint32_t RenderWidgetHostViewChildFrame::GetSurfaceIdNamespace() {
   if (!use_surfaces_)
     return 0;
 
   return id_allocator_->id_namespace();
 }
 
+void RenderWidgetHostViewChildFrame::ProcessKeyboardEvent(
+    const NativeWebKeyboardEvent& event) {
+  host_->ForwardKeyboardEvent(event);
+}
+
+void RenderWidgetHostViewChildFrame::ProcessMouseEvent(
+    const blink::WebMouseEvent& event) {
+  host_->ForwardMouseEvent(event);
+}
+
+void RenderWidgetHostViewChildFrame::ProcessMouseWheelEvent(
+    const blink::WebMouseWheelEvent& event) {
+  if (event.deltaX != 0 || event.deltaY != 0)
+    host_->ForwardWheelEvent(event);
+}
+
 #if defined(OS_MACOSX)
 void RenderWidgetHostViewChildFrame::SetActive(bool active) {
 }
 
 void RenderWidgetHostViewChildFrame::SetWindowVisibility(bool visible) {
 }
 
 void RenderWidgetHostViewChildFrame::WindowFrameChanged() {
 }
 
@@ skipping 86 matching lines @@
       BrowserAccessibilityManager::GetEmptyDocument(), delegate);
 }
 
 void RenderWidgetHostViewChildFrame::ClearCompositorSurfaceIfNecessary() {
   if (surface_factory_ && !surface_id_.is_null())
     surface_factory_->Destroy(surface_id_);
   surface_id_ = cc::SurfaceId();
 }
 
 }  // namespace content