Histograms added for GPU Process Crashed, Died, Launched

BUG=62865
TEST=none

Review URL: http://codereview.chromium.org/5299003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@67341 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 18 insertions, 0 deletions

diff --git a/chrome/browser/gpu_process_host.cc b/chrome/browser/gpu_process_host.cc
index 639d100..2f5a8b7 100644
--- a/chrome/browser/gpu_process_host.cc
+++ b/chrome/browser/gpu_process_host.cc
@@ -6,6 +6,7 @@
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
+#include "base/metrics/histogram.h"
 #include "base/thread.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_thread.h"
@@ -28,6 +29,12 @@
 
 namespace {
 
+enum GPUProcessLifetimeEvent {
+  kLaunched,
+  kCrashed,
+  kGPUProcessLifetimeEvent_Max
+  };
+
 // Tasks used by this file
 class RouteOnUIThreadTask : public Task {
  public:
@@ -343,6 +350,14 @@ bool GpuProcessHost::CanShutdown() {
   return true;
 }
 
+void GpuProcessHost::OnChildDied() {
+  // Located in OnChildDied because OnProcessCrashed suffers from a race
+  // condition on Linux. The GPU process will only die if it crashes.
+  UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
+                            kCrashed, kGPUProcessLifetimeEvent_Max);
+  BrowserChildProcessHost::OnChildDied();
+}
+
 void GpuProcessHost::OnProcessCrashed() {
   // TODO(alokp): Update gpu process crash rate.
   BrowserChildProcessHost::OnProcessCrashed();
@@ -393,6 +408,8 @@ bool GpuProcessHost::LaunchGpuProcess() {
 #endif
       cmd_line);
 
+  UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
+                            kLaunched, kGPUProcessLifetimeEvent_Max);
   return true;
 }
 
diff --git a/chrome/browser/gpu_process_host.h b/chrome/browser/gpu_process_host.h
index 3ee2ba6..c7492eb 100644
--- a/chrome/browser/gpu_process_host.h
+++ b/chrome/browser/gpu_process_host.h
@@ -105,6 +105,7 @@ class GpuProcessHost : public BrowserChildProcessHost, public NonThreadSafe {
       const ViewHostMsg_Resource_Request& request_data);
 
   virtual bool CanShutdown();
+  virtual void OnChildDied();
   virtual void OnProcessCrashed();
 
   bool CanLaunchGpuProcess() const;