Fix accessible touch exploration inside of iframes.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index e982660a8a5b0a44e669ff5ea94555b00fa36481..eab5ad427375ee1af243167a7b18b117eee8f13d 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -547,6 +547,8 @@ bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
                         OnAccessibilityLocationChanges)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_FindInPageResult,
                         OnAccessibilityFindInPageResult)
+    IPC_MESSAGE_HANDLER(AccessibilityHostMsg_ChildFrameHitTestResult,
+                        OnAccessibilityChildFrameHitTestResult)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_SnapshotResponse,
                         OnAccessibilitySnapshotResponse)
     IPC_MESSAGE_HANDLER(FrameHostMsg_ToggleFullscreen, OnToggleFullscreen)
@@ -1693,7 +1695,7 @@ void RenderFrameHostImpl::OnAccessibilityEvents(
           CHECK(ax_tree_for_testing_->Unserialize(detail.update))
               << ax_tree_for_testing_->error();
         }
-        accessibility_testing_callback_.Run(detail.event_type, detail.id);
+        accessibility_testing_callback_.Run(this, detail.event_type, detail.id);
       }
     }
   }
@@ -1735,6 +1737,14 @@ void RenderFrameHostImpl::OnAccessibilityFindInPageResult(
   }
 }
 
+void RenderFrameHostImpl::OnAccessibilityChildFrameHitTestResult(
+    const gfx::Point& point, int hit_obj_id) {

[nasko, 2016/03/30 21:01:41]

style: Each param on a new line.

[dmazzoni, 2016/03/31 16:15:54]

Done.

+  if (browser_accessibility_manager_) {
+    browser_accessibility_manager_->OnChildFrameHitTestResult(
+        point, hit_obj_id);
+  }
+}
+
 void RenderFrameHostImpl::OnAccessibilitySnapshotResponse(
     int callback_id,
     const AXContentTreeUpdate& snapshot) {
@@ -2402,7 +2412,9 @@ void RenderFrameHostImpl::RequestAXTreeSnapshot(
 }
 
 void RenderFrameHostImpl::SetAccessibilityCallbackForTesting(
-    const base::Callback<void(ui::AXEvent, int)>& callback) {
+    const base::Callback<void(RenderFrameHostImpl*,
+                              ui::AXEvent,
+                              int)>& callback) {
   accessibility_testing_callback_ = callback;
 }