Support multiple files for AEC dump.

content/browser/media/webrtc_browsertest.cc

Index: content/browser/media/webrtc_browsertest.cc
diff --git a/content/browser/media/webrtc_browsertest.cc b/content/browser/media/webrtc_browsertest.cc
index 729d64a112f79d5363f6c89e83dc337158442585..610871955b34adab6b8bb14ec793cafc4e57e9bc 100644
--- a/content/browser/media/webrtc_browsertest.cc
+++ b/content/browser/media/webrtc_browsertest.cc
@@ -4,6 +4,7 @@
 
 #include "base/command_line.h"
 #include "base/file_util.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/platform_thread.h"
 #include "base/values.h"
@@ -410,6 +411,21 @@ IN_PROC_BROWSER_TEST_P(WebRtcBrowserTest, MAYBE_CallWithAecDump) {
   DisableOpusIfOnAndroid();
   ExecuteJavascriptAndWaitForOk("call({video: true, audio: true});");
 
+  // Get the ID for the render process host.
+  int render_process_host_id = -1;
+  for (RenderProcessHost::iterator i(
+           content::RenderProcessHost::AllHostsIterator());
+       !i.IsAtEnd(); i.Advance()) {
+    render_process_host_id = i.GetCurrentValue()->GetID();
+    break;
+  }
+  EXPECT_GE(render_process_host_id, 0);
+
+  // Add file extensions that we expect to be added.
+  static const int kExpectedConsumerId = 0;
+  dump_file = dump_file.AddExtension(base::IntToString(render_process_host_id))
+                       .AddExtension(base::IntToString(kExpectedConsumerId));
+
   EXPECT_TRUE(base::PathExists(dump_file));
   int64 file_size = 0;
   EXPECT_TRUE(base::GetFileSize(dump_file, &file_size));