Initial support for Renderer Side Histograms...

chrome/renderer/render_thread.cc

Index: chrome/renderer/render_thread.cc
===================================================================
--- chrome/renderer/render_thread.cc	(revision 10329)
+++ chrome/renderer/render_thread.cc	(working copy)
@@ -59,7 +59,8 @@
               MessageLoop::TYPE_UI : MessageLoop::TYPE_DEFAULT, kStackSize)),
       visited_link_slave_(NULL),
       user_script_slave_(NULL),
-      render_dns_master_(NULL) {
+      render_dns_master_(NULL),
+      renderer_histogram_snapshots_(NULL) {
   SetChannelName(channel_name);
 }
 
@@ -83,6 +84,10 @@
   return render_dns_master_->Resolve(name, length);
 }
 
+void RenderThread::SendHistograms() {
+  return renderer_histogram_snapshots_->SendHistograms();
+}
+
 void RenderThread::Init() {
   ChildThread::Init();
   notification_service_.reset(new NotificationService);
@@ -97,6 +102,7 @@
   visited_link_slave_ = new VisitedLinkSlave();
   user_script_slave_ = new UserScriptSlave();
   render_dns_master_.reset(new RenderDnsMaster());
+  renderer_histogram_snapshots_.reset(new RendererHistogramSnapshots());
 }
 
 void RenderThread::CleanUp() {
@@ -140,6 +146,8 @@
     // is there a new non-windows message I should add here?
     IPC_MESSAGE_HANDLER(ViewMsg_New, OnCreateNewView)
     IPC_MESSAGE_HANDLER(ViewMsg_SetCacheCapacities, OnSetCacheCapacities)
+    IPC_MESSAGE_HANDLER(ViewMsg_GetRendererHistograms,
+                          OnGetRendererHistograms)
     IPC_MESSAGE_HANDLER(ViewMsg_GetCacheResourceStats,
                         OnGetCacheResourceStats)
     IPC_MESSAGE_HANDLER(ViewMsg_PluginMessage, OnPluginMessage)
@@ -212,6 +220,10 @@
 #endif
 }
 
+void RenderThread::OnGetRendererHistograms() {
+  SendHistograms();
+}
+
 void RenderThread::InformHostOfCacheStats() {
 #if defined(OS_WIN) || defined(OS_LINUX)
   CacheManager::UsageStats stats;