Enable DirectComposition by default (reland)

ui/gl/gl_switches.cc

Index: ui/gl/gl_switches.cc
diff --git a/ui/gl/gl_switches.cc b/ui/gl/gl_switches.cc
index fd80ff4c85c878bf2b8761265e01e462bb15fd5e..2fbde37d3a5413b73a96f62f8a0bc7267075736b 100644
--- a/ui/gl/gl_switches.cc
+++ b/ui/gl/gl_switches.cc
@@ -67,8 +67,8 @@ const char kSwiftShaderPath[]               = "swiftshader-path";
 // context will never be lost in any situations, say, a GPU reset.
 const char kGpuNoContextLost[]              = "gpu-no-context-lost";
 
-// Turns on the use of DirectComposition to draw to the screen.
-const char kUseDirectComposition[] = "use-direct-composition";
+// Disables the use of DirectComposition to draw to the screen.
+const char kDisableDirectComposition[] = "disable-direct-composition";
 
 // Indicates whether the dual GPU switching is supported or not.
 const char kSupportsDualGpus[]              = "supports-dual-gpus";
@@ -98,16 +98,16 @@ const char kDisableGLExtensions[] = "disable-gl-extensions";
 // GpuProcessHost to the GPU Process. Add your switch to this list if you need
 // to read it in the GPU process, else don't add it.
 const char* kGLSwitchesCopiedFromGpuProcessHost[] = {
-  kDisableGpuVsync,
-  kDisableD3D11,
-  kEnableGPUServiceLogging,
-  kEnableGPUServiceTracing,
-  kEnableUnsafeES3APIs,
-  kGpuNoContextLost,
-  kDisableGLDrawingForTests,
-  kOverrideUseGLWithOSMesaForTests,
-  kUseANGLE,
-  kUseDirectComposition,
+    kDisableGpuVsync,
+    kDisableD3D11,
+    kEnableGPUServiceLogging,
+    kEnableGPUServiceTracing,
+    kEnableUnsafeES3APIs,
+    kGpuNoContextLost,
+    kDisableGLDrawingForTests,
+    kOverrideUseGLWithOSMesaForTests,
+    kUseANGLE,
+    kDisableDirectComposition,
 };
 const int kGLSwitchesCopiedFromGpuProcessHostNumSwitches =
     arraysize(kGLSwitchesCopiedFromGpuProcessHost);