gpu: Add CHROMIUM_texture_from_image spec and fence support.

components/exo/buffer.cc

Index: components/exo/buffer.cc
diff --git a/components/exo/buffer.cc b/components/exo/buffer.cc
index 9b1778d989d6c0250efff832d6372f401e15e129..0c771df3d66a9af9af0a44c9fa7e7f412b238e52 100644
--- a/components/exo/buffer.cc
+++ b/components/exo/buffer.cc
@@ -238,7 +238,7 @@ gpu::SyncToken Buffer::Texture::BindTexImage() {
     gles2->ActiveTexture(GL_TEXTURE0);
     gles2->BindTexture(texture_target_, texture_id_);
     DCHECK_NE(image_id_, 0u);
-    gles2->BindTexImage2DCHROMIUM(texture_target_, image_id_);
+    gles2->BindTexImage2DCHROMIUM(texture_target_, image_id_, 0);
     // Generate a crypto-secure random mailbox name if not already done.
     if (mailbox_.IsZero())
       CreateGLTextureMailbox(gles2, texture_id_, texture_target_, &mailbox_);
@@ -284,7 +284,7 @@ gpu::SyncToken Buffer::Texture::CopyTexImage(Texture* destination,
     gles2->ActiveTexture(GL_TEXTURE0);
     gles2->BindTexture(texture_target_, texture_id_);
     DCHECK_NE(image_id_, 0u);
-    gles2->BindTexImage2DCHROMIUM(texture_target_, image_id_);
+    gles2->BindTexImage2DCHROMIUM(texture_target_, image_id_, 0);
     gles2->CopyTextureCHROMIUM(texture_id_, destination->texture_id_,
                                internalformat_, GL_UNSIGNED_BYTE, false, false,
                                false);