[cc] Add nearest neighbor filtering for TextureLayer.

cc/resources/resource_provider.cc

Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index 9651ef7939f0e33347b1976d89c308492df08858..3cdb45cf5793e4b2ddd90a46b85fb5117f05c678 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -596,10 +596,10 @@ ResourceProvider::ResourceId ResourceProvider::CreateResourceFromTextureMailbox(
                         gfx::Size(),
                         Resource::External,
                         mailbox.target(),
-                        GL_LINEAR,
+                        mailbox.nearest_neighbor() ? GL_NEAREST : GL_LINEAR,
                         0,
                         GL_CLAMP_TO_EDGE,
-                        TextureHintImmutable,
+                        TextureHintDefault,

[piman, 2014/10/28 05:09:50]

Why change this?

[jackhou1, 2014/10/29 00:12:25]

Done.

                         RGBA_8888);
   } else {
     DCHECK(mailbox.IsSharedMemory());
@@ -616,7 +616,7 @@ ResourceProvider::ResourceId ResourceProvider::CreateResourceFromTextureMailbox(
                         shared_bitmap.release(),
                         mailbox.shared_memory_size(),
                         Resource::External,
-                        GL_LINEAR,
+                        mailbox.nearest_neighbor() ? GL_NEAREST : GL_LINEAR,
                         GL_CLAMP_TO_EDGE);
   }
   resource.allocated = true;
@@ -1335,7 +1335,7 @@ void ResourceProvider::ReceiveFromChild(
       resource = Resource(it->mailbox_holder.mailbox,
                           it->size,
                           Resource::Delegated,
-                          GL_LINEAR,
+                          it->filter,
                           it->is_repeated ? GL_REPEAT : GL_CLAMP_TO_EDGE);
     } else {
       resource = Resource(0,
@@ -1345,7 +1345,7 @@ void ResourceProvider::ReceiveFromChild(
                           it->filter,
                           0,
                           it->is_repeated ? GL_REPEAT : GL_CLAMP_TO_EDGE,
-                          TextureHintImmutable,
+                          TextureHintDefault,

[piman, 2014/10/28 05:09:50]

And this

[jackhou1, 2014/10/29 00:12:25]

Done.

                           it->format);
       resource.mailbox = TextureMailbox(it->mailbox_holder.mailbox,
                                         it->mailbox_holder.texture_target,