[autofill] Show autofill popup when focusing a field by tapping near its edge.

content/public/test/render_view_test.h

Index: content/public/test/render_view_test.h
diff --git a/content/public/test/render_view_test.h b/content/public/test/render_view_test.h
index 936c329bd0f6e2d99ba96680c13363f624c6a040..d512c547bced141a42e460340a1cf1e946f6edbf 100644
--- a/content/public/test/render_view_test.h
+++ b/content/public/test/render_view_test.h
@@ -110,6 +110,9 @@ class RenderViewTest : public testing::Test {
   // Sends a left mouse click at the |point|.
   void SimulatePointClick(const gfx::Point& point);
 
+  // Sends a tap at the |rect|.
+  void SimulateRectTap(const gfx::Rect& rect);
+
   // Simulates |node| being focused.
   void SetFocused(const blink::WebNode& node);