Incorporate BlobChannel into Blimp image encode/decode pipeline.

blimp/client/BUILD.gn

Index: blimp/client/BUILD.gn
diff --git a/blimp/client/BUILD.gn b/blimp/client/BUILD.gn
index 44c627be0cf664c0230576eaac2bb7ba2e2b7c9f..93a8c25ab9c2fbdcbbd5dd96f057b716a14c923d 100644
--- a/blimp/client/BUILD.gn
+++ b/blimp/client/BUILD.gn
@@ -25,6 +25,7 @@ source_set("session") {
   ]
 
   deps = [
+    ":compositor",
     "//base",
     "//blimp/common",
     "//blimp/common/proto",
@@ -44,15 +45,16 @@ source_set("client") {
   ]
 
   public_deps = [
-    ":compositor",
     ":session",
     ":switches",
     "//components/safe_json",
     "//components/url_formatter",
+    "//skia",
     "//ui/events",
   ]
 
   deps = [
+    ":compositor",
     "//base",
     "//blimp/common",
     "//blimp/common/proto",
@@ -234,6 +236,7 @@ source_set("compositor") {
   public_deps = [
     ":feature",
     "//blimp/common/proto",
+    "//skia",
   ]
 }