Create RenderFrame/RenderFrameHost for the main frame of a page.

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index 652b1eab27781952e0a51b9daf569c9904f103e0..b34d21a9f0caa4c35d7b599351a2e27133079e69 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -1855,4 +1855,11 @@ TEST_F(RenderViewImplTest, NavigateFrame) {
   EXPECT_EQ(output, L"hello \n\nworld");
 }
 
+// This test ensures that a RenderFrame object is created for the top level
+// frame in the RenderView.
+TEST_F(RenderViewImplTest, BasicRenderFrame) {
+  EXPECT_TRUE(view()->main_render_frame_.get());
+  EXPECT_EQ(view()->routing_id() + 1, view()->main_render_frame_->routing_id());
+}
+
 }  // namespace content