ABANDONED CL: WaitForChildFrameSurfaceReady to avoid flaky test hangs.

content/browser/renderer_host/input/input_router_impl.cc

Index: content/browser/renderer_host/input/input_router_impl.cc
diff --git a/content/browser/renderer_host/input/input_router_impl.cc b/content/browser/renderer_host/input/input_router_impl.cc
index 1dc0f2ccd07bfd3a03d0e7b821edf4bd3e263b45..b0ead629a878809d9bb4241985e569b4f40430da 100644
--- a/content/browser/renderer_host/input/input_router_impl.cc
+++ b/content/browser/renderer_host/input/input_router_impl.cc
@@ -8,6 +8,10 @@
 
 #include <utility>
 
+#include "base/debug/debugger.h"
+// TODO: DO NOT SUBMIT: Remove ad-hoc debugging before submitting.
+#include "base/debug/stack_trace.h"
+
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
@@ -437,8 +441,27 @@ bool InputRouterImpl::OfferToRenderer(const WebInputEvent& input_event,
     // or in-flight event count metrics.
     if (dispatch_type == InputEventDispatchType::DISPATCH_TYPE_BLOCKING)
       client_->IncrementInFlightEventCount(input_event.type());
+
+    if (WebInputEvent::isMouseEventType(input_event.type())) {
+      const WebMouseEvent* me = static_cast<const WebMouseEvent*>(&input_event);
+      LOG(ERROR) << "; button = " << static_cast<int>(me->button)
+                 << "; local = (" << me->x << ", " << me->y << ")"
+                 << "; global = (" << me->globalX << ", " << me->globalY << ")";
+      if (me->button == blink::WebPointerProperties::Button::NoButton &&
+          me->x == 55) {
+        static int counter = 0;
+        counter++;
+        if (counter == 3) {
+          LOG(ERROR) << "; stack = " << base::debug::StackTrace().ToString();
+        }
+      }
+    }
+
     return true;
   }
+
+  LOG(ERROR) << "OfferToRenderer - Send returned false - !!!!!!!!!!!";
+
   return false;
 }