Revert of Enable zero-copy DXGI video by default.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index f93c0a913aa65296f6d692a829157af28a13dbb7..f739f5418c836a790928d188cb2f109e27436ce1 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -308,9 +308,6 @@
 // Disable rasterizer that writes directly to GPU memory associated with tiles.
 const char kDisableZeroCopy[]                = "disable-zero-copy";
 
-// Disable the video decoder from drawing directly to a texture.
-const char kDisableZeroCopyDxgiVideo[] = "disable-zero-copy-dxgi-video";
-
 // Specifies if the |DOMAutomationController| needs to be bound in the
 // renderer. This binding happens on per-frame basis and hence can potentially
 // be a performance bottleneck. One should only enable it when automating dom
@@ -518,6 +515,9 @@
 
 // Enable rasterizer that writes directly to GPU memory associated with tiles.
 const char kEnableZeroCopy[]                = "enable-zero-copy";
+
+// Enable the video decoder to draw directly to a texture.
+const char kEnableZeroCopyDxgiVideo[] = "enable-zero-copy-dxgi-video";
 
 // Explicitly allows additional ports using a comma-separated list of port
 // numbers.