debugd: Fix coding style and cpplint issues.

BUG=chromium:385849
TEST=`FEATURES=test emerge-$BOARD platform2`
TEST=`cpplint.py --root=src --filter=-build/include src/{*.h,*.cc,*/*.cc}`

Change-Id: Ia2475d6ee287dc727c3b2ffe139e9cc8bfe2e2e5
Reviewed-on: https://chromium-review.googlesource.com/204391
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
diff --git a/debugd/src/memory_tool.cc b/debugd/src/memory_tool.cc
index 49140c9..7a16d60 100644
--- a/debugd/src/memory_tool.cc
+++ b/debugd/src/memory_tool.cc
@@ -10,14 +10,19 @@
 
 namespace debugd {
 
-const char* kMemtesterpath = "/usr/sbin/memtester";
+namespace {
+
+const char kMemtesterpath[] = "/usr/sbin/memtester";
+
+}  // namespace
 
 MemtesterTool::MemtesterTool() { }
+
 MemtesterTool::~MemtesterTool() { }
 
 std::string MemtesterTool::Start(const DBus::FileDescriptor& outfd,
                                  const uint32_t& memory,
-                                 DBus::Error& error) {
+                                 DBus::Error* error) {
   ProcessWithId* p = CreateProcess(false);
   if (!p)
     return "";
@@ -32,4 +37,4 @@
   return p->id();
 }
 
-};  // namespace debugd
+}  // namespace debugd