Remove --disable-accelerated-compositing

After r264075, this is not used by the renderer. Also, nothing sets it
but tests (and for the wrong reasons). Also, it's not like it works any
more after r264103.  Replace it in tests by --disable-gpu, and remove
from the code.

BUG=362164
[email protected], [email protected], [email protected]

Review URL: https://codereview.chromium.org/238933009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@264295 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/renderer/savable_resources_browsertest.cc b/content/renderer/savable_resources_browsertest.cc
index b80c8af..730b28b 100644
--- a/content/renderer/savable_resources_browsertest.cc
+++ b/content/renderer/savable_resources_browsertest.cc
@@ -22,7 +22,7 @@
     command_line->AppendSwitch(switches::kSingleProcess);
 #if defined(OS_WIN)
     // Don't want to try to create a GPU process.
-    command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
+    command_line->AppendSwitch(switches::kDisableGpu);
 #endif
   }