Added an integration test for kasko hang reports

content/browser/frame_host/debug_urls.cc

Index: content/browser/frame_host/debug_urls.cc
diff --git a/content/browser/frame_host/debug_urls.cc b/content/browser/frame_host/debug_urls.cc
index f095f8e51e1ce000c58fe8c3bdd5f7cb1a9f1dff..1f93ce19fe549e0b0df9685f424d065ca038320c 100644
--- a/content/browser/frame_host/debug_urls.cc
+++ b/content/browser/frame_host/debug_urls.cc
@@ -30,6 +30,11 @@
 
 namespace content {
 
+class ScopedAllowWaitForDebugURL {
+ private:
+  base::ThreadRestrictions::ScopedAllowWait wait;
+};
+
 namespace {
 
 // Define the Asan debug URLs.
@@ -163,14 +168,13 @@ bool HandleAsanDebugURL(const GURL& url) {
   return true;
 }
 
+void HangCurrentThread() {
+  ScopedAllowWaitForDebugURL allow_wait;
+  base::WaitableEvent(false, false).Wait();
+}
 
 }  // namespace
 
-class ScopedAllowWaitForDebugURL {
- private:
-  base::ThreadRestrictions::ScopedAllowWait wait;
-};
-
 bool HandleDebugURL(const GURL& url, ui::PageTransition transition) {
   // Ensure that the user explicitly navigated to this URL, unless
   // kEnableGpuBenchmarking is enabled by Telemetry.
@@ -198,8 +202,11 @@ bool HandleDebugURL(const GURL& url, ui::PageTransition transition) {
   }
 
   if (url == GURL(kChromeUIBrowserUIHang)) {
-    ScopedAllowWaitForDebugURL allow_wait;
-    base::WaitableEvent(false, false).Wait();
+    // Webdriver waits for the onload event in javascript which needs a little
+    // more time to fire.
+    BrowserThread::PostDelayedTask(BrowserThread::UI, FROM_HERE,
+                                   base::Bind(&HangCurrentThread),
+                                   base::TimeDelta::FromSeconds(1));
     return true;
   }