gn: Make command_buffer_gles2 deps less weird.

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index 4de4d9226b423da2761aac6328eb70871f97bcba..000a0b92f7e8419304e28cfed03fcc6d03e3b58d 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -63,21 +63,13 @@ shared_library("command_buffer_gles2") {
   ]
 
   deps = [
+    ":gpu",
     "//base",
     "//gpu/command_buffer/client:gles2_c_lib",
     "//gpu/command_buffer/client:gles2_implementation",
-    "//gpu/command_buffer/service",
-    "//gpu/config:config_sources",
     "//ui/gl:gl",
   ]
 
-  if (!is_component_build) {
-    deps += [
-      "//gpu/command_buffer/client:client_sources",
-      "//gpu/command_buffer/client:gles2_cmd_helper_sources",
-    ]
-  }
-
   defines = [
     "COMMAND_BUFFER_GLES_LIB_SUPPORT_ONLY",
     "EGLAPIENTRY=",