diff --git a/gfx/tests/gtest/LayerTestUtils.cpp b/gfx/tests/gtest/LayerTestUtils.cpp
new file mode 100644
index 00000000000..0fc990d4fb8
--- /dev/null
+++ b/gfx/tests/gtest/LayerTestUtils.cpp
@@ -0,0 +1,159 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+
+#include "gfx2DGlue.h"
+#include "gfxImageSurface.h"
+#include "gfxTypes.h"
+#include "ImageContainer.h"
+#include "mozilla/layers/Compositor.h"
+#include "LayerTestUtils.h"
+#include "mozilla/layers/CompositorOGL.h"
+#include "mozilla/layers/BasicCompositor.h"
+#ifdef XP_WIN
+#include "mozilla/layers/CompositorD3D11.h"
+#include "mozilla/layers/CompositorD3D9.h"
+#endif
+
+namespace mozilla {
+namespace layers {
+
+Compositor*
+CreateCompositor(LayersBackend aBackend, nsIWidget* aWidget)
+{
+  switch (aBackend) {
+    case LAYERS_BASIC: return new BasicCompositor(aWidget);
+    case LAYERS_OPENGL: return new CompositorOGL(aWidget, 800, 600, false);
+#ifdef XP_WIN
+    case LAYERS_D3D11: return new CompositorD3D11(aWidget);
+    case LAYERS_D3D9: return new CompositorD3D9(aWidget);
+#endif
+  }
+  return nullptr;
+}
+
+// fills the surface with values betwee 0 and 100.
+void
+SetupSurface(gfx::DataSourceSurface* surface)
+{
+  int bpp = gfx::BytesPerPixel(surface->GetFormat());
+  int stride = surface->Stride();
+  uint8_t val = 0;
+  uint8_t* data = surface->GetData();
+  for (int y = 0; y < surface->GetSize().height; ++y) {
+    for (int x = 0; x < surface->GetSize().width; ++x) {
+      for (int b = 0; b < bpp; ++b) {
+        data[y*stride + x*bpp + b] = val;
+        if (val == 100) {
+          val = 0;
+        } else {
+          ++val;
+        }
+      }
+    }
+  }
+}
+
+// fills the surface with values betwee 0 and 100.
+void
+SetupSurface(gfxImageSurface* surface)
+{
+  int bpp = gfxASurface::BytePerPixelFromFormat(surface->Format());
+  int stride = surface->Stride();
+  uint8_t val = 0;
+  uint8_t* data = surface->Data();
+  for (int y = 0; y < surface->Height(); ++y) {
+    for (int x = 0; x < surface->Width(); ++x) {
+      for (int b = 0; b < bpp; ++b) {
+        data[y*stride + x*bpp + b] = val;
+        if (val == 100) {
+          val = 0;
+        } else {
+          ++val;
+        }
+      }
+    }
+  }
+}
+
+
+// return true if two surfaces contain the same data
+void
+AssertSurfacesEqual(gfx::DataSourceSurface* surface1,
+                    gfx::DataSourceSurface* surface2)
+{
+  ASSERT_EQ(surface1->GetSize(), surface2->GetSize());
+  ASSERT_EQ(surface1->GetFormat(), surface2->GetFormat());
+
+  uint8_t* data1 = surface1->GetData();
+  uint8_t* data2 = surface2->GetData();
+  int stride1 = surface1->Stride();
+  int stride2 = surface2->Stride();
+  int bpp = gfx::BytesPerPixel(surface1->GetFormat());
+
+  for (int y = 0; y < surface1->GetSize().height; ++y) {
+    for (int x = 0; x < surface1->GetSize().width; ++x) {
+      for (int b = 0; b < bpp; ++b) {
+        ASSERT_EQ(data1[y*stride1 + x*bpp + b],
+                  data2[y*stride2 + x*bpp + b]);
+      }
+    }
+  }
+}
+
+// return true if two surfaces contain the same data
+void
+AssertSurfacesEqual(gfxImageSurface* surface1,
+                    gfxImageSurface* surface2)
+{
+  ASSERT_EQ(surface1->GetSize(), surface2->GetSize());
+  ASSERT_EQ(surface1->Format(), surface2->Format());
+
+  uint8_t* data1 = surface1->Data();
+  uint8_t* data2 = surface2->Data();
+  int stride1 = surface1->Stride();
+  int stride2 = surface2->Stride();
+  int bpp = gfxASurface::BytePerPixelFromFormat(surface1->Format());
+
+  for (int y = 0; y < surface1->Height(); ++y) {
+    for (int x = 0; x < surface1->Width(); ++x) {
+      for (int b = 0; b < bpp; ++b) {
+        ASSERT_EQ(data1[y*stride1 + x*bpp + b],
+                  data2[y*stride2 + x*bpp + b]);
+      }
+    }
+  }
+}
+
+// Same as above, for YCbCr surfaces
+void
+AssertYCbCrSurfacesEqual(PlanarYCbCrData* surface1,
+                         PlanarYCbCrData* surface2)
+{
+  ASSERT_EQ(surface1->mYSize, surface2->mYSize);
+  ASSERT_EQ(surface1->mCbCrSize, surface2->mCbCrSize);
+  ASSERT_EQ(surface1->mStereoMode, surface2->mStereoMode);
+  ASSERT_EQ(surface1->mPicSize, surface2->mPicSize);
+
+  for (int y = 0; y < surface1->mYSize.height; ++y) {
+    for (int x = 0; x < surface1->mYSize.width; ++x) {
+      ASSERT_EQ(surface1->mYChannel[y*surface1->mYStride + x*(1+surface1->mYSkip)],
+                surface2->mYChannel[y*surface2->mYStride + x*(1+surface2->mYSkip)]);
+    }
+  }
+  for (int y = 0; y < surface1->mCbCrSize.height; ++y) {
+    for (int x = 0; x < surface1->mCbCrSize.width; ++x) {
+      ASSERT_EQ(surface1->mCbChannel[y*surface1->mCbCrStride + x*(1+surface1->mCbSkip)],
+                surface2->mCbChannel[y*surface2->mCbCrStride + x*(1+surface2->mCbSkip)]);
+      ASSERT_EQ(surface1->mCrChannel[y*surface1->mCbCrStride + x*(1+surface1->mCrSkip)],
+                surface2->mCrChannel[y*surface2->mCbCrStride + x*(1+surface2->mCrSkip)]);
+    }
+  }
+}
+
+} // layers
+} // mozilla
diff --git a/gfx/tests/gtest/LayerTestUtils.h b/gfx/tests/gtest/LayerTestUtils.h
new file mode 100644
index 00000000000..0f489f751c0
--- /dev/null
+++ b/gfx/tests/gtest/LayerTestUtils.h
@@ -0,0 +1,48 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+#ifndef TEST_GFX_TEXTURES
+#define TEST_GFX_TEXTURES
+
+#include "CompositorTypes.h"
+
+class gfxImageSurface;
+class nsIWidget;
+
+namespace mozilla {
+namespace gfx {
+  class DataSourceSurface;
+}
+
+namespace layers {
+
+class PlanarYCbCrData;
+class Compositor;
+
+Compositor* CreateCompositor(LayersBackend aBakend, nsIWidget* aWidget);
+
+/// Fills the surface with values between 0 and 100.
+void SetupSurface(gfxImageSurface* surface);
+
+/// Fills the surface with values between 0 and 100.
+void SetupSurface(gfx::DataSourceSurface* surface);
+
+/// Returns true if two surfaces contain the same data
+void AssertSurfacesEqual(gfx::DataSourceSurface* surface1,
+                         gfx::DataSourceSurface* surface2);
+
+/// Returns true if two surfaces contain the same data
+void AssertSurfacesEqual(gfxImageSurface* surface1,
+                         gfxImageSurface* surface2);
+
+/// Same as above, for YCbCr surfaces
+void AssertYCbCrSurfacesEqual(PlanarYCbCrData* surface1,
+                              PlanarYCbCrData* surface2);
+
+
+} // layers
+} // mozilla
+
+#endif
diff --git a/gfx/tests/gtest/TestTextures.cpp b/gfx/tests/gtest/TestTextures.cpp
index 521ee8f1e24..f0f456a0636 100644
--- a/gfx/tests/gtest/TestTextures.cpp
+++ b/gfx/tests/gtest/TestTextures.cpp
@@ -12,6 +12,7 @@
 #include "gfxImageSurface.h"
 #include "gfxTypes.h"
 #include "ImageContainer.h"
+#include "LayerTestUtils.h"
 #include "mozilla/layers/YCbCrImageDataSerializer.h"
 
 using namespace mozilla;
@@ -30,75 +31,6 @@ using namespace mozilla::layers;
  * image formats.
  */
 
-
-// fills the surface with values betwee 0 and 100.
-void SetupSurface(gfxImageSurface* surface) {
-  int bpp = gfxASurface::BytePerPixelFromFormat(surface->Format());
-  int stride = surface->Stride();
-  uint8_t val = 0;
-  uint8_t* data = surface->Data();
-  for (int y = 0; y < surface->Height(); ++y) {
-    for (int x = 0; x < surface->Height(); ++x) {
-      for (int b = 0; b < bpp; ++b) {
-        data[y*stride + x*bpp + b] = val;
-        if (val == 100) {
-          val = 0;
-        } else {
-          ++val;
-        }
-      }
-    }
-  }
-}
-
-// return true if two surfaces contain the same data
-void AssertSurfacesEqual(gfxImageSurface* surface1,
-                         gfxImageSurface* surface2)
-{
-  ASSERT_EQ(surface1->GetSize(), surface2->GetSize());
-  ASSERT_EQ(surface1->Format(), surface2->Format());
-
-  uint8_t* data1 = surface1->Data();
-  uint8_t* data2 = surface2->Data();
-  int stride1 = surface1->Stride();
-  int stride2 = surface2->Stride();
-  int bpp = gfxASurface::BytePerPixelFromFormat(surface1->Format());
-
-  for (int y = 0; y < surface1->Height(); ++y) {
-    for (int x = 0; x < surface1->Width(); ++x) {
-      for (int b = 0; b < bpp; ++b) {
-        ASSERT_EQ(data1[y*stride1 + x*bpp + b],
-                  data2[y*stride2 + x*bpp + b]);
-      }
-    }
-  }
-}
-
-// Same as above, for YCbCr surfaces
-void AssertYCbCrSurfacesEqual(PlanarYCbCrData* surface1,
-                              PlanarYCbCrData* surface2)
-{
-  ASSERT_EQ(surface1->mYSize, surface2->mYSize);
-  ASSERT_EQ(surface1->mCbCrSize, surface2->mCbCrSize);
-  ASSERT_EQ(surface1->mStereoMode, surface2->mStereoMode);
-  ASSERT_EQ(surface1->mPicSize, surface2->mPicSize);
-
-  for (int y = 0; y < surface1->mYSize.height; ++y) {
-    for (int x = 0; x < surface1->mYSize.width; ++x) {
-      ASSERT_EQ(surface1->mYChannel[y*surface1->mYStride + x*(1+surface1->mYSkip)],
-                surface2->mYChannel[y*surface2->mYStride + x*(1+surface2->mYSkip)]);
-    }
-  }
-  for (int y = 0; y < surface1->mCbCrSize.height; ++y) {
-    for (int x = 0; x < surface1->mCbCrSize.width; ++x) {
-      ASSERT_EQ(surface1->mCbChannel[y*surface1->mCbCrStride + x*(1+surface1->mCbSkip)],
-                surface2->mCbChannel[y*surface2->mCbCrStride + x*(1+surface2->mCbSkip)]);
-      ASSERT_EQ(surface1->mCrChannel[y*surface1->mCbCrStride + x*(1+surface1->mCrSkip)],
-                surface2->mCrChannel[y*surface2->mCbCrStride + x*(1+surface2->mCrSkip)]);
-    }
-  }
-}
-
 // Run the test for a texture client and a surface
 void TestTextureClientSurface(TextureClient* texture, gfxImageSurface* surface) {
 
diff --git a/gfx/tests/gtest/moz.build b/gfx/tests/gtest/moz.build
index 48892108e39..50df727c4e7 100644
--- a/gfx/tests/gtest/moz.build
+++ b/gfx/tests/gtest/moz.build
@@ -15,6 +15,7 @@ GTEST_CPP_SOURCES += [
     # Test works but it doesn't assert anything
     #'gfxTextRunPerfTest.cpp',
     'gfxWordCacheTest.cpp',
+    'LayerTestUtils.cpp',
     'TestAsyncPanZoomController.cpp',
     'TestLayers.cpp',
     'TestTiledLayerBuffer.cpp',