Add hints for potential overlay promotion on android.

cc/ipc/cc_param_traits_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <string.h>
 #include <algorithm>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 190 matching lines @@
     EXPECT_EQ(a.format, b.format);
     EXPECT_EQ(a.filter, b.filter);
     EXPECT_EQ(a.size.ToString(), b.size.ToString());
     for (size_t i = 0; i < arraysize(a.mailbox_holder.mailbox.name); ++i) {
       EXPECT_EQ(a.mailbox_holder.mailbox.name[i],
                 b.mailbox_holder.mailbox.name[i]);
     }
     EXPECT_EQ(a.mailbox_holder.texture_target, b.mailbox_holder.texture_target);
     EXPECT_EQ(a.mailbox_holder.sync_token, b.mailbox_holder.sync_token);
     EXPECT_EQ(a.is_overlay_candidate, b.is_overlay_candidate);
+    EXPECT_EQ(a.is_backed_by_surface_texture, b.is_backed_by_surface_texture);

[piman, 2016/12/01 21:55:25]

nit (here and below): also add wants_promotion_hint
You'll need to put them in #if defined(OS_ANDROID)

[liberato (no reviews please), 2016/12/05 18:14:00]

Done.

   }
 };
 
 TEST_F(CCParamTraitsTest, AllQuads) {
   IPC::Message msg(1, 2, IPC::Message::PRIORITY_NORMAL);
 
   Transform arbitrary_matrix1;
   arbitrary_matrix1.Scale(3, 3);
   arbitrary_matrix1.Translate(-5, 20);
   arbitrary_matrix1.Rotate(15);
@@ skipping 343 matching lines @@
 
   TransferableResource arbitrary_resource1;
   arbitrary_resource1.id = 2178312;
   arbitrary_resource1.format = cc::RGBA_8888;
   arbitrary_resource1.filter = 53;
   arbitrary_resource1.size = gfx::Size(37189, 123123);
   arbitrary_resource1.mailbox_holder.mailbox.SetName(arbitrary_mailbox1);
   arbitrary_resource1.mailbox_holder.texture_target = GL_TEXTURE_2D;
   arbitrary_resource1.mailbox_holder.sync_token = arbitrary_token1;
   arbitrary_resource1.is_overlay_candidate = true;
+  arbitrary_resource1.is_backed_by_surface_texture = true;
 
   TransferableResource arbitrary_resource2;
   arbitrary_resource2.id = 789132;
   arbitrary_resource2.format = cc::RGBA_4444;
   arbitrary_resource2.filter = 47;
   arbitrary_resource2.size = gfx::Size(89123, 23789);
   arbitrary_resource2.mailbox_holder.mailbox.SetName(arbitrary_mailbox2);
   arbitrary_resource2.mailbox_holder.texture_target = GL_TEXTURE_EXTERNAL_OES;
   arbitrary_resource2.mailbox_holder.sync_token = arbitrary_token2;
   arbitrary_resource2.is_overlay_candidate = false;
+  arbitrary_resource2.is_backed_by_surface_texture = false;
 
   std::unique_ptr<RenderPass> renderpass_in = RenderPass::Create();
   renderpass_in->SetNew(RenderPassId(1, 1), gfx::Rect(), gfx::Rect(),
                         gfx::Transform());
 
   CompositorFrame frame_in;
   frame_in.resource_list.push_back(arbitrary_resource1);
   frame_in.resource_list.push_back(arbitrary_resource2);
   frame_in.render_pass_list.push_back(std::move(renderpass_in));
 
   IPC::ParamTraits<CompositorFrame>::Write(&msg, frame_in);
 
   CompositorFrame frame_out;
   base::PickleIterator iter(msg);
   EXPECT_TRUE(IPC::ParamTraits<CompositorFrame>::Read(&msg, &iter, &frame_out));
 
   ASSERT_EQ(2u, frame_out.resource_list.size());
   Compare(arbitrary_resource1, frame_out.resource_list[0]);
   Compare(arbitrary_resource2, frame_out.resource_list[1]);
 }
 
 }  // namespace
 }  // namespace content