Use kRenderClientId command line flag when starting a render process

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index 9c38a750e729b96a3018e770741c06434c08bc60..48a9acf52cc8a2543044077153cf77faf49757ea 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -4134,17 +4134,11 @@ TEST_F(RenderWidgetHostViewAuraTest, ForwardMouseEvent) {
 TEST_F(RenderWidgetHostViewAuraTest, FrameSinkIdInitialized) {

[Fady Samuel, 2016/10/28 20:59:33]

I don't see the point of this test.

   gfx::Size size(5, 5);
 
-  const IPC::Message* msg =
-      sink_->GetUniqueMessageMatching(ViewMsg_SetFrameSinkId::ID);
-  EXPECT_TRUE(msg);
-  ViewMsg_SetFrameSinkId::Param params;
-  ViewMsg_SetFrameSinkId::Read(msg, &params);
   view_->InitAsChild(nullptr);
   view_->Show();
   view_->SetSize(size);
   view_->OnSwapCompositorFrame(0,
                                MakeDelegatedFrame(1.f, size, gfx::Rect(size)));
-  EXPECT_EQ(view_->GetFrameSinkId(), std::get<0>(params));
 }
 
 // This class provides functionality to test a RenderWidgetHostViewAura