Prevent duplicate navigation to debug URLs from Telemetry.

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index 76de960a2fbe7cb8ccac60c485896fcffceeb02b..0f096df2ff778b0b0045be577c141287b814e34a 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -68,6 +68,7 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
       CreateGpuMemoryBufferCallback;
 
   static bool gpu_enabled() { return gpu_enabled_; }
+  static int gpu_crash_count() { return gpu_crash_count_; }
 
   // Creates a new GpuProcessHost or gets an existing one, resulting in the
   // launching of a GPU process if required.  Returns null on failure. It
@@ -233,6 +234,12 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
 
   static bool hardware_gpu_enabled_;
 
+  static int gpu_crash_count_;
+  static int gpu_recent_crash_count_;
+  static base::Time last_gpu_crash_time_;
+  static bool crashed_before_;
+  static int swiftshader_crash_count_;
+
   scoped_ptr<BrowserChildProcessHostImpl> process_;
 
   // Track the URLs of the pages which have live offscreen contexts,