Revert of Add ClientNativePixmap multi-planar support.

ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc

Index: ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc
diff --git a/ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc b/ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc
index 78514efaf6d53440fdd5c284f47dad084cc0da0e..98bf5565baaf6715588b8e6a76d698488dd982f9 100644
--- a/ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc
+++ b/ui/ozone/gl/gl_image_ozone_native_pixmap_unittest.cc
@@ -38,16 +38,11 @@
     if (usage == gfx::BufferUsage::GPU_READ_CPU_READ_WRITE) {
       auto client_pixmap = client_pixmap_factory_->ImportFromHandle(
           pixmap->ExportHandle(), size, usage);
-      bool mapped = client_pixmap->Map();
-      EXPECT_TRUE(mapped);
-
-      for (size_t plane = 0; plane < NumberOfPlanesForBufferFormat(format);
-           ++plane) {
-        void* data = client_pixmap->GetMemoryAddress(plane);
-        GLImageTestSupport::SetBufferDataToColor(
-            size.width(), size.height(), pixmap->GetDmaBufPitch(plane), plane,
-            pixmap->GetBufferFormat(), color, static_cast<uint8_t*>(data));
-      }
+      void* data = client_pixmap->Map();
+      EXPECT_TRUE(data);
+      GLImageTestSupport::SetBufferDataToColor(
+          size.width(), size.height(), pixmap->GetDmaBufPitch(0), 0,
+          pixmap->GetBufferFormat(), color, static_cast<uint8_t*>(data));
       client_pixmap->Unmap();
     }