shill: Replace VLOG with SLOG.

This CL replaces all uses of VLOG(level) with SLOG(scope, level) with
the same verbose level and an appropriate scope for each affected
logging statement.

BUG=chromium-os:29641
TEST=Build and run unit tests. Test scope logging with ff_debug.

Change-Id: Ifdcf1faa2a309bcbd9ee369a66179ce9c7f1ad19
Reviewed-on: https://gerrit.chromium.org/gerrit/20629
Commit-Ready: Ben Chan <benchan@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
diff --git a/http_proxy.cc b/http_proxy.cc
index d4b31fd..2a50e87 100644
--- a/http_proxy.cc
+++ b/http_proxy.cc
@@ -25,6 +25,7 @@
 #include "shill/dns_client.h"
 #include "shill/event_dispatcher.h"
 #include "shill/ip_address.h"
+#include "shill/scope_logger.h"
 #include "shill/sockets.h"
 
 using base::Bind;
@@ -86,7 +87,7 @@
 
 bool HTTPProxy::Start(EventDispatcher *dispatcher,
                       Sockets *sockets) {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
 
   if (sockets_) {
     // We are already running.
@@ -138,7 +139,7 @@
 }
 
 void HTTPProxy::Stop() {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
 
   if (!sockets_ ) {
     return;
@@ -161,7 +162,7 @@
 // proxy's socket.  We Accept() the client and start reading a request
 // from it.
 void HTTPProxy::AcceptClient(int fd) {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
 
   int client_fd = sockets_->Accept(fd, NULL, NULL);
   if (client_fd < 0) {
@@ -233,7 +234,7 @@
 // we should connect to and either start a DNS request or connect to a
 // numeric address.
 bool HTTPProxy::ParseClientRequest() {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
 
   string host;
   bool found_via = false;
@@ -308,7 +309,7 @@
       return false;
     }
   } else {
-    VLOG(3) << "Looking up host: " << server_hostname_;
+    SLOG(HTTPProxy, 3) << "Looking up host: " << server_hostname_;
     Error error;
     if (!dns_client_->Start(server_hostname_, &error)) {
       SendClientError(502, "Could not resolve hostname: " + error.message());
@@ -461,7 +462,7 @@
 // IOInputHandler callback that fires when data is read from the client.
 // This could be header data, or perhaps POST data that follows the headers.
 void HTTPProxy::ReadFromClient(InputData *data) {
-  VLOG(3) << "In " << __func__ << " length " << data->len;
+  SLOG(HTTPProxy, 3) << "In " << __func__ << " length " << data->len;
 
   if (data->len == 0) {
     // EOF from client.
@@ -494,7 +495,7 @@
 // IOInputHandler callback which fires when data has been read from the
 // server.
 void HTTPProxy::ReadFromServer(InputData *data) {
-  VLOG(3) << "In " << __func__ << " length " << data->len;
+  SLOG(HTTPProxy, 3) << "In " << __func__ << " length " << data->len;
   if (data->len == 0) {
     // Server closed connection.
     if (server_data_.IsEmpty()) {
@@ -513,7 +514,7 @@
 
 // Return an HTTP error message back to the client.
 void HTTPProxy::SendClientError(int code, const string &error) {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
   LOG(ERROR) << "Sending error " << error;
   SetClientResponse(code, "ERROR", "text/plain", error);
   state_ = kStateFlushResponse;
@@ -619,7 +620,7 @@
 // which alerts us to new clients connecting.  This function is called
 // during various error conditions and is a callback for all timeouts.
 void HTTPProxy::StopClient() {
-  VLOG(3) << "In " << __func__;
+  SLOG(HTTPProxy, 3) << "In " << __func__;
 
   if (is_route_requested_) {
     connection_->ReleaseRouting();
@@ -658,8 +659,8 @@
   CHECK_EQ(client_socket_, fd);
   int ret = sockets_->Send(fd, server_data_.GetConstData(),
                            server_data_.GetLength(), 0);
-  VLOG(3) << "In " << __func__ << " wrote " << ret << " of " <<
-      server_data_.GetLength();
+  SLOG(HTTPProxy, 3) << "In " << __func__ << " wrote " << ret << " of "
+                     << server_data_.GetLength();
   if (ret < 0) {
     LOG(ERROR) << "Server write failed";
     StopClient();
@@ -682,8 +683,8 @@
   CHECK_EQ(server_socket_, fd);
   int ret = sockets_->Send(fd, client_data_.GetConstData(),
                            client_data_.GetLength(), 0);
-  VLOG(3) << "In " << __func__ << " wrote " << ret << " of " <<
-      client_data_.GetLength();
+  SLOG(HTTPProxy, 3) << "In " << __func__ << " wrote " << ret << " of "
+                     << client_data_.GetLength();
 
   if (ret < 0) {
     LOG(ERROR) << "Client write failed";