Increase GPU collection timeout on Mac Debug

Increases the timeout for GPU info collection on Mac Debug builds, as
tests are flakily hitting the 5 second default timeout.

Bug: 1153667
Change-Id: Ica5608d53d6c65a9a0af9c6ec69829346a348b8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2566695
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Auto-Submit: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#832155}

content/browser/devtools/protocol/system_info_handler.cc

@@ -46,9 +46,11 @@ std::unique_ptr<SystemInfo::Size> GfxSizeToSystemInfoSize(
       .Build();
 }
 // Give the GPU process a few seconds to provide GPU info.
-// Linux Debug builds need more time -- see Issue 796437 and 1046598.
+// Linux and Mac Debug builds need more time -- see Issue 796437, 1046598, and
+// 1153667.
 // Windows builds need more time -- see Issue 873112 and 1004472.
-#if ((defined(OS_LINUX) || defined(OS_CHROMEOS)) && !defined(NDEBUG)) || \
+#if ((defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_MAC)) && \
+     !defined(NDEBUG)) ||                                              \
     defined(OS_WIN)
 const int kGPUInfoWatchdogTimeoutMs = 30000;
 #else