Move code in ui/gl/* from gfx:: to gl::

content/browser/compositor/image_transport_factory.cc

Index: content/browser/compositor/image_transport_factory.cc
diff --git a/content/browser/compositor/image_transport_factory.cc b/content/browser/compositor/image_transport_factory.cc
index de8f0750d503f9acac00c282dd89ac375dc4531b..835748d63c5540063c61903e4d2574b00c406132 100644
--- a/content/browser/compositor/image_transport_factory.cc
+++ b/content/browser/compositor/image_transport_factory.cc
@@ -15,7 +15,7 @@ namespace content {
 namespace {
 ImageTransportFactory* g_factory = NULL;
 bool g_initialized_for_unit_tests = false;
-static gfx::DisableNullDrawGLBindings* g_disable_null_draw = NULL;
+static gl::DisableNullDrawGLBindings* g_disable_null_draw = NULL;
 
 void SetFactory(ImageTransportFactory* factory) {
   g_factory = factory;
@@ -40,7 +40,7 @@ void ImageTransportFactory::InitializeForUnitTests(
   const base::CommandLine* command_line =
       base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kEnablePixelOutputInTests))
-    g_disable_null_draw = new gfx::DisableNullDrawGLBindings;
+    g_disable_null_draw = new gl::DisableNullDrawGLBindings;
 
   SetFactory(factory.release());
 }