Adding support for sampling crashes in Chrome on Windows.

components/crash/content/app/crash_reporter_client.h

Index: components/crash/content/app/crash_reporter_client.h
diff --git a/components/crash/content/app/crash_reporter_client.h b/components/crash/content/app/crash_reporter_client.h
index 157ba53e1361493bcc4632caafa01b0052d8c4ea..a6b8cb1d63e13774fb545604d13f9d7792d7db8c 100644
--- a/components/crash/content/app/crash_reporter_client.h
+++ b/components/crash/content/app/crash_reporter_client.h
@@ -138,6 +138,10 @@ class CrashReporterClient {
   // Returns true if the user has given consent to collect stats.
   virtual bool GetCollectStatsConsent();
 
+  // Returns false if the client is affected by sampling, and shouldn't report
+  // crashes. Otherwise, returns true.
+  virtual bool GetCollectStatsInSample();
+
 #if defined(OS_WIN) || defined(OS_MACOSX)
   // Returns true if crash reporting is enforced via management policies. In
   // that case, |breakpad_enabled| is set to the value enforced by policies.