Add 'NavigationHandle::QueueConsoleMessage'.

content/test/test_render_frame_host.h

Index: content/test/test_render_frame_host.h
diff --git a/content/test/test_render_frame_host.h b/content/test/test_render_frame_host.h
index 32aa044e8642512e2c6c42b0dba68e42a62e1b95..218987a32a47a582985f86f8b7dc232f62413dfd 100644
--- a/content/test/test_render_frame_host.h
+++ b/content/test/test_render_frame_host.h
@@ -52,6 +52,8 @@ class TestRenderFrameHost : public RenderFrameHostImpl,
   // RenderFrameHostImpl overrides (same values, but in Test*/Mock* types)
   TestRenderViewHost* GetRenderViewHost() override;
   MockRenderProcessHost* GetProcess() override;
+  void AddMessageToConsole(ConsoleMessageLevel,
+                           const std::string& message) override;
 
   // RenderFrameHostTester implementation.
   void InitializeRenderFrameIfNeeded() override;
@@ -97,6 +99,10 @@ class TestRenderFrameHost : public RenderFrameHostImpl,
   void SendNavigateWithParams(
       FrameHostMsg_DidCommitProvisionalLoad_Params* params);
 
+  std::vector<std::string> GetConsoleMessages() const {
+    return console_messages_;
+  }
+
   // Simulate a renderer-initiated navigation up until commit.
   void NavigateAndCommitRendererInitiated(int page_id,
                                           bool did_create_new_entry,
@@ -156,6 +162,9 @@ class TestRenderFrameHost : public RenderFrameHostImpl,
   // See set_simulate_history_list_was_cleared() above.
   bool simulate_history_list_was_cleared_;
 
+  // See AddMessageToConsole() above.
+  std::vector<std::string> console_messages_;
+
   DISALLOW_COPY_AND_ASSIGN(TestRenderFrameHost);
 };