[cc] Add nearest neighbor filtering for TextureLayer.

cc/resources/resource_provider_unittest.cc

Index: cc/resources/resource_provider_unittest.cc
diff --git a/cc/resources/resource_provider_unittest.cc b/cc/resources/resource_provider_unittest.cc
index e507ad67a93558d64c805a6edc69db2be348791a..0a358d165798db31c0dfd9b55b0dcb46dbfeb4c3 100644
--- a/cc/resources/resource_provider_unittest.cc
+++ b/cc/resources/resource_provider_unittest.cc
@@ -2648,6 +2648,7 @@ TEST_P(ResourceProviderTest, TextureMailbox_GLTexture2D) {
                                                    &main_thread_task_runner));
 
   TextureMailbox mailbox(gpu_mailbox, target, sync_point);
+  mailbox.set_nearest_neighbor(true);
 
   ResourceProvider::ResourceId id =
       resource_provider->CreateResourceFromTextureMailbox(
@@ -2663,13 +2664,21 @@ TEST_P(ResourceProviderTest, TextureMailbox_GLTexture2D) {
     Mock::VerifyAndClearExpectations(context);
 
     // Using the texture does a consume of the mailbox.
-    EXPECT_CALL(*context, bindTexture(target, texture_id));
+    EXPECT_CALL(*context, bindTexture(target, texture_id)).Times(2);
     EXPECT_CALL(*context, consumeTextureCHROMIUM(target, _));
 
     EXPECT_CALL(*context, insertSyncPoint()).Times(0);
     EXPECT_CALL(*context, produceTextureCHROMIUM(_, _)).Times(0);
 
-    ResourceProvider::ScopedReadLockGL lock(resource_provider.get(), id);
+    // The sampler will reset these because |nearest_neighbor| was set on the

[danakj, 2014/11/17 17:39:41]

It would be nice to test 2 TextureMailboxes, one with and one without nearest
neighbour set, so we can see the behaviour for each one.

[jackhou1, 2014/11/17 22:46:35]

Refactored this test in a similar way to ResourceProviderTestTextureFilters.

+    // mailbox.
+    EXPECT_CALL(*context,
+                texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
+    EXPECT_CALL(*context,
+                texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
+
+    ResourceProvider::ScopedSamplerGL lock(
+        resource_provider.get(), id, GL_LINEAR);
     Mock::VerifyAndClearExpectations(context);
 
     // When done with it, a sync point should be inserted, but no produce is