Add Mojo API for Blink hit testing

content/browser/site_per_process_browsertest.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/site_per_process_browsertest.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 46 matching lines @@
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/interstitial_page_delegate.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/common/browser_side_navigation_policy.h"
+#include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/navigation_handle_observer.h"
 #include "content/public/test/test_frame_navigation_observer.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "content/test/content_browser_test_utils_internal.h"
@@ skipping 183 matching lines @@
 // This helper accounts for Android devices which use page scale factor
 // different from 1.0. Coordinate targeting needs to be adjusted before
 // hit testing.
 double GetPageScaleFactor(Shell* shell) {
   return RenderWidgetHostImpl::From(
              shell->web_contents()->GetRenderViewHost()->GetWidget())
       ->last_frame_metadata()
       .page_scale_factor;
 }
 
+bool callback_received = false;
+int received_frame_id = -2;
+
+void callback(int frame_id) {
+  received_frame_id = frame_id;
+  callback_received = true;
+}
+
 // Helper function that performs a surface hittest.
 void SurfaceHitTestTestHelper(
     Shell* shell,
     net::test_server::EmbeddedTestServer* embedded_test_server) {
   GURL main_url(embedded_test_server->GetURL(
       "/frame_tree/page_with_positioned_frame.html"));
   EXPECT_TRUE(NavigateToURL(shell, main_url));
 
   // It is safe to obtain the root frame tree node here, as it doesn't change.
   FrameTreeNode* root = static_cast<WebContentsImpl*>(shell->web_contents())
@@ skipping 37 matching lines @@
                                    blink::WebInputEvent::kTimeStampForTesting);
   child_event.button = blink::WebPointerProperties::Button::kLeft;
   child_event.SetPositionInWidget(
       gfx::ToCeiledInt((bounds.x() - root_view->GetViewBounds().x() + 5) *
                        scale_factor),
       gfx::ToCeiledInt((bounds.y() - root_view->GetViewBounds().y() + 5) *
                        scale_factor));
   child_event.click_count = 1;
   main_frame_monitor.ResetEventReceived();
   child_frame_monitor.ResetEventReceived();
+
+  callback_received = false;
+  root->current_frame_host()->GetFrameInputHandler()->HitTestFrameAt(
+      (gfx::PointF)child_event.PositionInWidget(), base::Bind(&callback));
+  while (!callback_received) {
+    base::RunLoop run_loop;
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+        FROM_HERE, run_loop.QuitClosure(), TestTimeouts::tiny_timeout());
+    run_loop.Run();
+  }
+  ASSERT_EQ(4, received_frame_id);
+
   router->RouteMouseEvent(root_view, &child_event, ui::LatencyInfo());
 
   EXPECT_TRUE(child_frame_monitor.EventWasReceived());
   // The expected result coordinates are (5, 5), but can get slightly
   // different results due to rounding error with some page scale factors.
   EXPECT_NEAR(5, child_frame_monitor.event().PositionInWidget().x, 2);
   EXPECT_NEAR(5, child_frame_monitor.event().PositionInWidget().y, 2);
   EXPECT_FALSE(main_frame_monitor.EventWasReceived());
 
   child_frame_monitor.ResetEventReceived();
@@ skipping 275 matching lines @@
 SitePerProcessBrowserTest::SitePerProcessBrowserTest() {
 };
 
 std::string SitePerProcessBrowserTest::DepictFrameTree(FrameTreeNode* node) {
   return visualizer_.DepictFrameTree(node);
 }
 
 void SitePerProcessBrowserTest::SetUpCommandLine(
     base::CommandLine* command_line) {
   IsolateAllSitesForTesting(command_line);
+  std::vector<base::StringPiece> enabled_features;
+  std::vector<base::StringPiece> disabled_features;
+  enabled_features.push_back(features::kMojoInputMessages.name);
 #if !defined(OS_ANDROID)
   // TODO(bokan): Needed for scrollability check in
   // FrameOwnerPropertiesPropagationScrolling. crbug.com/662196.
-  feature_list_.InitAndDisableFeature(features::kOverlayScrollbar);
+  disabled_features.push_back(features::kOverlayScrollbar.name);
 #endif
+  feature_list_.InitFromCommandLine(base::JoinString(enabled_features, ","),
+                                    base::JoinString(disabled_features, ","));
 }
 
 void SitePerProcessBrowserTest::SetUpOnMainThread() {
   host_resolver()->AddRule("*", "127.0.0.1");
   SetupCrossSiteRedirector(embedded_test_server());
   ASSERT_TRUE(embedded_test_server()->Start());
 }
 
 //
 // SitePerProcessHighDPIBrowserTest
@@ skipping 9554 matching lines @@
   // Go back again.  This should go to foo.com.
   {
     TestNavigationObserver back_observer(web_contents());
     web_contents()->GetController().GoBack();
     back_observer.Wait();
   }
   EXPECT_EQ(foo_url, web_contents()->GetMainFrame()->GetLastCommittedURL());
 }
 
 }  // namespace content