Add "frame to navigate" to NavigationEntry and plumb it to the RenderViewImpl

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 6f003099c57b5bf0105492bbb82b08a84428bf63..8d1e706f6205c6f1868679ae91a842f866b2f4b1 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -1859,4 +1859,30 @@ TEST_F(RenderViewImplTest, OnExtendSelectionAndDelete) {
   EXPECT_EQ(2, info.selectionEnd);
 }
 
+// Test that the navigating specific frames works correctly.
+TEST_F(RenderViewImplTest, NavigateFrame) {
+  // Load page A.
+  LoadHTML("hello <iframe srcdoc='fail' name='frame'></iframe>");
+
+  // Navigate the frame only.
+  ViewMsg_Navigate_Params nav_params;
+  nav_params.url = GURL("data:text/html,world");
+  nav_params.navigation_type = ViewMsg_Navigate_Type::NORMAL;
+  nav_params.transition = PAGE_TRANSITION_TYPED;
+  nav_params.current_history_list_length = 1;
+  nav_params.current_history_list_offset = 0;
+  nav_params.pending_history_list_offset = 1;
+  nav_params.page_id = -1;
+  nav_params.frame_to_navigate = "frame";
+  view()->OnNavigate(nav_params);
+  ProcessPendingMessages();
+
+  // Copy the document content to std::wstring and compare with the
+  // expected result.
+  const int kMaxOutputCharacters = 256;
+  std::wstring output = UTF16ToWideHack(
+      GetMainFrame()->contentAsText(kMaxOutputCharacters));
+  EXPECT_EQ(output, L"hello \n\nworld");
+}
+
 }  // namespace content