Suppress heapchecker leaks.

tools/heapcheck/suppressions.txt

Index: tools/heapcheck/suppressions.txt
diff --git a/tools/heapcheck/suppressions.txt b/tools/heapcheck/suppressions.txt
index 0d22f51824edd41d4e81d4f0ce7f415915d039b2..0c47b5d1008b2f4ed591f7f8e1376ff24a990b83 100644
--- a/tools/heapcheck/suppressions.txt
+++ b/tools/heapcheck/suppressions.txt
@@ -797,3 +797,45 @@
    ...
    fun:ProfileManagerTest_CreateAndUseTwoProfiles_Test::TestBody
 }
+{
+   bug_47188_a
+   Heapcheck:Leak
+   fun:net::SingleThreadedProxyResolver::GetProxyForURL
+   fun:net::::IOThread::Init
+   fun:base::Thread::ThreadMain
+   fun:ThreadFunc
+   fun:start_thread
+}
+{
+   bug_47188_b
+   Heapcheck:Leak
+   fun:__gnu_cxx::new_allocator::allocate
+   fun:std::string::_Rep::_S_create
+   fun:std::string::_Rep::_M_clone
+   fun:std::string::reserve
+   fun:bool ::InitCanonical
+   fun:GURL
+   fun:net::::IOThread::Init
+   fun:base::Thread::ThreadMain
+   fun:ThreadFunc
+   fun:start_thread
+}
+{
+   bug_47188_c
+   Heapcheck:Leak
+   ...
+   fun:net::SingleThreadedProxyResolver::Job::DoQuery
+   fun:void DispatchToMethod
+   fun:RunnableMethod::Run
+   fun:MessageLoop::RunTask
+   fun:MessageLoop::DeferOrRunPendingTask
+   fun:MessageLoop::DoWork
+   fun:base::MessagePumpDefault::Run
+   fun:MessageLoop::RunInternal
+   fun:MessageLoop::RunHandler
+   fun:MessageLoop::Run
+   fun:base::Thread::Run
+   fun:base::Thread::ThreadMain
+   fun:ThreadFunc
+   fun:start_thread
+}