[Memory-UMA] Implement basic working prototype.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 3b4128fccff1188906bae3c2f9a76a7af4fc0815..01dee9bd41cbc46e2d38d10e1955a31693ac743e 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -797,14 +797,6 @@ void BrowserMainLoop::PostMainMessageLoopStart() {
     LevelDBWrapperImpl::EnableAggressiveCommitDelay();
   }
 
-  // Create the memory instrumentation service. It will initialize the memory
-  // dump manager, too. It makes sense that BrowserMainLoop owns the service;
-  // this way, the service is alive for the lifetime of Mojo. Mojo is shutdown
-  // in BrowserMainLoop::ShutdownThreadsAndCleanupIO.
-  memory_instrumentation_coordinator_ =
-      base::MakeUnique<memory_instrumentation::CoordinatorImpl>(
-          true /* initialize_memory_dump_manager */);
-
   // Enable memory-infra dump providers.
   InitSkiaEventTracer();
   tracing::ProcessMetricsMemoryDumpProvider::RegisterForProcess(
@@ -1399,6 +1391,16 @@ int BrowserMainLoop::BrowserThreadsStarted() {
   // so this cannot happen any earlier than now.
   InitializeMojo();
 
+  // Create the memory instrumentation service. It will initialize the memory
+  // dump manager, too. It makes sense that BrowserMainLoop owns the service;
+  // this way, the service is alive for the lifetime of Mojo. Mojo is shutdown
+  // in BrowserMainLoop::ShutdownThreadsAndCleanupIO.
+  memory_instrumentation_coordinator_ =
+      base::MakeUnique<memory_instrumentation::CoordinatorImpl>(
+          true /* initialize_memory_dump_manager */,
+          content::ServiceManagerConnection::GetForProcess()->GetConnector(),
+          true /* initialize_process_map */);
+
 #if defined(USE_AURA)
   if (service_manager::ServiceManagerIsRemote()) {
     base::CommandLine::ForCurrentProcess()->AppendSwitch(