Remove impl-side-painting from about:flags

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 727c7c4da9e710733b0ecf487094583565b6bea3..17eacb8142163b119ea290862cbf6025d89d651e 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -1071,10 +1071,11 @@ static void AppendCompositorCommandLineFlags(base::CommandLine* command_line) {
     command_line->AppendSwitch(switches::kEnableDelegatedRenderer);
 
   if (IsImplSidePaintingEnabled()) {
-    command_line->AppendSwitch(switches::kEnableImplSidePainting);
     command_line->AppendSwitchASCII(
         switches::kNumRasterThreads,
         base::IntToString(NumberOfRendererRasterThreads()));
+  } else {
+    command_line->AppendSwitch(switches::kDisableImplSidePainting);

[no sievers, 2015/01/09 20:22:32]

So this was broken before in that it didn't propagate the cmdline to the
renderer?

[danakj, 2015/01/09 20:23:14]

No the renderer was looking for enable before. Now it'll look for disable
instead. See the RenderThreadImpl change.

[danakj, 2015/01/09 21:32:52]

Tho it appears that at least in the RenderThreadImplBrowserTest (which are not
actually browser tests...), implside painting was not previously enabled. Will
fix.

   }
 
   if (IsGpuRasterizationEnabled())