Add a base class of Texture for interfacing with the mailbox manager.

gpu/command_buffer/service/mailbox_manager_unittest.cc

Index: gpu/command_buffer/service/mailbox_manager_unittest.cc
diff --git a/gpu/command_buffer/service/mailbox_manager_unittest.cc b/gpu/command_buffer/service/mailbox_manager_unittest.cc
index 0c2a1e0f1e54dad240c81c09fe0857582738bf71..9d7772b9a80fd5c277d426a9b6c0d44c04407eb0 100644
--- a/gpu/command_buffer/service/mailbox_manager_unittest.cc
+++ b/gpu/command_buffer/service/mailbox_manager_unittest.cc
@@ -80,7 +80,7 @@ class MailboxManagerTest : public GpuServiceTest {
     return texture->SetParameteri(feature_info_.get(), pname, param);
   }
 
-  void DestroyTexture(Texture* texture) {
+  void DestroyTexture(TextureBase* texture) {
     delete texture;
   }
 
@@ -331,8 +331,10 @@ TEST_F(MailboxManagerSyncTest, ProduceConsumeResize) {
       .WillOnce(SetArgPointee<1>(kNewTextureId));
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* new_texture = manager2_->ConsumeTexture(name);
-  EXPECT_FALSE(new_texture == NULL);
+  TextureBase* new_texture_base = manager2_->ConsumeTexture(name);
+  EXPECT_NE(nullptr, new_texture_base);
+  Texture* new_texture = new_texture_base->AsTexture();
+  EXPECT_NE(nullptr, new_texture);
   EXPECT_NE(texture, new_texture);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
 
@@ -388,8 +390,8 @@ TEST_F(MailboxManagerSyncTest, ProduceConsumeBidirectional) {
   Mailbox name1 = Mailbox::Generate();
   Texture* texture2 = DefineTexture();
   Mailbox name2 = Mailbox::Generate();
-  Texture* new_texture1 = NULL;
-  Texture* new_texture2 = NULL;
+  TextureBase* new_texture1 = NULL;
+  TextureBase* new_texture2 = NULL;
 
   manager_->ProduceTexture(name1, texture1);
   manager2_->ProduceTexture(name2, texture2);
@@ -471,8 +473,10 @@ TEST_F(MailboxManagerSyncTest, ProduceAndClobber) {
       .WillOnce(SetArgPointee<1>(kNewTextureId));
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* new_texture = manager2_->ConsumeTexture(name);
-  EXPECT_FALSE(new_texture == NULL);
+  TextureBase* new_texture_base = manager2_->ConsumeTexture(name);
+  EXPECT_NE(nullptr, new_texture_base);
+  Texture* new_texture = new_texture_base->AsTexture();
+  EXPECT_NE(nullptr, new_texture);
   EXPECT_NE(texture, new_texture);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
 
@@ -505,7 +509,7 @@ TEST_F(MailboxManagerSyncTest, ProduceAndClobber) {
       .WillOnce(SetArgPointee<1>(kNewTextureId));
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_NEAREST, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* tmp_texture = manager2_->ConsumeTexture(name);
+  TextureBase* tmp_texture = manager2_->ConsumeTexture(name);
   EXPECT_NE(new_texture, tmp_texture);
   DestroyTexture(tmp_texture);
 
@@ -536,8 +540,10 @@ TEST_F(MailboxManagerSyncTest, ClearedStateSynced) {
       .WillOnce(SetArgPointee<1>(kNewTextureId));
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* new_texture = manager2_->ConsumeTexture(name);
-  EXPECT_FALSE(new_texture == NULL);
+  TextureBase* new_texture_base = manager2_->ConsumeTexture(name);
+  EXPECT_NE(nullptr, new_texture_base);
+  Texture* new_texture = new_texture_base->AsTexture();
+  EXPECT_NE(nullptr, new_texture);
   EXPECT_NE(texture, new_texture);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
   EXPECT_TRUE(texture->SafeToRenderFrom());
@@ -584,8 +590,10 @@ TEST_F(MailboxManagerSyncTest, SyncIncompleteTexture) {
   SetupUpdateTexParamExpectations(kNewTextureId, texture->min_filter(),
                                   texture->mag_filter(), texture->wrap_s(),
                                   texture->wrap_t());
-  Texture* new_texture = manager2_->ConsumeTexture(name);
-  ASSERT_TRUE(new_texture);
+  TextureBase* new_texture_base = manager2_->ConsumeTexture(name);
+  EXPECT_NE(nullptr, new_texture_base);
+  Texture* new_texture = new_texture_base->AsTexture();
+  EXPECT_NE(nullptr, new_texture);
   EXPECT_NE(texture, new_texture);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
   EXPECT_FALSE(new_texture->IsDefined());
@@ -632,7 +640,7 @@ TEST_F(MailboxManagerSyncTest, SharedThroughMultipleMailboxes) {
   manager2_->PullTextureUpdates(g_sync_token);
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* new_texture = manager2_->ConsumeTexture(name1);
+  TextureBase* new_texture = manager2_->ConsumeTexture(name1);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
 
   manager_->ProduceTexture(name2, texture);
@@ -670,7 +678,7 @@ TEST_F(MailboxManagerSyncTest, ProduceBothWays) {
       .WillOnce(SetArgPointee<1>(kNewTextureId));
   SetupUpdateTexParamExpectations(
       kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
-  Texture* new_texture = manager2_->ConsumeTexture(name);
+  TextureBase* new_texture = manager2_->ConsumeTexture(name);
   EXPECT_EQ(kNewTextureId, new_texture->service_id());
 
   // Clobber