Unified the use of BufferToTextureTargetMap for all the Processes

ui/aura/mus/mus_context_factory.cc

Index: ui/aura/mus/mus_context_factory.cc
diff --git a/ui/aura/mus/mus_context_factory.cc b/ui/aura/mus/mus_context_factory.cc
index c73271e077b84ca4187fd1e3b7414197021a7735..539350d9db45ea2f0db582b4edba75dccc7272da 100644
--- a/ui/aura/mus/mus_context_factory.cc
+++ b/ui/aura/mus/mus_context_factory.cc
@@ -18,13 +18,28 @@
 
 namespace aura {
 
+namespace {
+cc::BufferToTextureTargetMap CreateBufferToTextureTargetMap() {
+  cc::BufferToTextureTargetMap image_targets;
+  for (int usage_idx = 0; usage_idx <= static_cast<int>(gfx::BufferUsage::LAST);
+       ++usage_idx) {
+    gfx::BufferUsage usage = static_cast<gfx::BufferUsage>(usage_idx);
+    for (int format_idx = 0;
+         format_idx <= static_cast<int>(gfx::BufferFormat::LAST);
+         ++format_idx) {
+      gfx::BufferFormat format = static_cast<gfx::BufferFormat>(format_idx);
+      // TODO(sad): http://crbug.com/675431
+      image_targets[std::make_pair(usage, format)] = GL_TEXTURE_2D;
+    }
+  }
+  return image_targets;
+}
+}  // namespace
+
 MusContextFactory::MusContextFactory(ui::Gpu* gpu)
     : gpu_(gpu),
-      renderer_settings_(ui::CreateRendererSettings(
-          [](gfx::BufferFormat format, gfx::BufferUsage usage) -> uint32_t {
-            // TODO(sad): http://crbug.com/675431
-            return GL_TEXTURE_2D;
-          })),
+      renderer_settings_(
+          ui::CreateRendererSettings(CreateBufferToTextureTargetMap())),
       weak_ptr_factory_(this) {}
 
 MusContextFactory::~MusContextFactory() {}