Implement touch events for site-isolation.

content/browser/site_per_process_browsertest.cc

Index: content/browser/site_per_process_browsertest.cc
diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
index c91e6b1592c5ed9150be7eb3b562882b55a28d60..f640836de824ac7cbc08a578b41bbfcda4c59b6f 100644
--- a/content/browser/site_per_process_browsertest.cc
+++ b/content/browser/site_per_process_browsertest.cc
@@ -49,8 +49,15 @@
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
+#include "ui/events/event.h"
+#include "ui/events/event_utils.h"
+#include "ui/gfx/geometry/point.h"
 #include "ui/gfx/switches.h"
 
+#if defined(USE_AURA)
+#include "content/browser/renderer_host/render_widget_host_view_aura.h"
+#endif
+
 #if defined(OS_MACOSX)
 #include "ui/base/test/scoped_preferred_scroller_style_mac.h"
 #endif
@@ -4426,6 +4433,56 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, OpenerSetLocation) {
   EXPECT_EQ(shell()->web_contents()->GetLastCommittedURL(), cross_url);
 }
 
+// Ensure that a cross-process subframe with a touch-handler can receive touch
+// events.
+#if defined(AURA)
+// Browser process hit testing is not implemented on Android, and this test
+// requires Aura for RenderWidgetHostViewAura::OnTouchEvent().
+// https://crbug.com/491334
+IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
+                       SubframeTouchEventRouting) {
+  GURL main_url(embedded_test_server()->GetURL(
+      "a.com", "/frame_tree/page_with_one_frame.html"));

[nasko, 2016/02/29 22:10:26]

You can navigate to "/cross_site_iframe_factory.html?a(b)", which will give you
an a.com parent with b.com child in one navigation. This will avoid having to
navigate separately the subframe below.

[wjmaclean, 2016/02/29 23:33:56]

Acknowledged.

+  EXPECT_TRUE(NavigateToURL(shell(), main_url));
+
+  WebContentsImpl* web_contents =
+      static_cast<WebContentsImpl*>(shell()->web_contents());
+  FrameTreeNode* root = web_contents->GetFrameTree()->root();
+
+  GURL frame_url(
+      embedded_test_server()->GetURL("b.com", "/page_with_touch_handler.html"));

[nasko, 2016/02/29 22:10:26]

Ah, you need a specific page in the iframe. Feel free to disregard my previous
comment, though I'm going to leave it for information purposes.

[wjmaclean, 2016/02/29 23:33:55]

Done.

+  NavigateFrameToURL(root->child_at(0), frame_url);
+  EXPECT_TRUE(WaitForRenderFrameReady(root->child_at(0)->current_frame_host()));
+
+  // Synchronize with the child and parent renderers to guarantee that the
+  // surface information required for event hit testing is ready.
+  RenderWidgetHostViewBase* child_rwhv = static_cast<RenderWidgetHostViewBase*>(
+      root->child_at(0)->current_frame_host()->GetView());
+  MainThreadFrameObserver child_observer(child_rwhv->GetRenderWidgetHost());
+  child_observer.Wait();
+
+  MainThreadFrameObserver parent_observer(
+      web_contents->GetRenderWidgetHostView()->GetRenderWidgetHost());
+  parent_observer.Wait();
+

[nasko, 2016/02/29 22:10:26]

nit: no need for extra empty line

[wjmaclean, 2016/02/29 23:33:56]

Done.

+
+  // Simulate touch event to sub-frame.
+  gfx::Point child_center = child_rwhv->GetBoundsInRootWindow().CenterPoint();
+  auto rwhv = static_cast<RenderWidgetHostViewAura*>(
+      web_contents->GetRenderWidgetHostView());
+  ui::TouchEvent touch_event(ui::ET_TOUCH_PRESSED, child_center, 0, 0,
+                             ui::EventTimeForNow(), 30.f, 30.f, 0.f, 0.f);
+  rwhv->OnTouchEvent(&touch_event);
+
+  // Verify touch handler in subframe was invoked
+  std::string result;
+  EXPECT_TRUE(ExecuteScriptAndExtractString(
+      root->child_at(0)->current_frame_host(),
+      "window.domAutomationController.send(getLastTouchEvent());", &result));
+  EXPECT_EQ("touchstart", result);
+}
+#endif  // defined(USE_AURA)
+
 // Ensure that a cross-process subframe can receive keyboard events when in
 // focus.
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,