Increase DevTools SystemInfoGPU timeout for Windows.

Before this CL, DevTools would crash the browser if it did not get a response in
5 seconds. This timeout is too low for Windows. On Catapult perf tests on
Windows, it takes ~3 seconds for the GPU process to respond on average, and
sometimes it takes more than 5 seconds.

Bug: 873112
Change-Id: I67ee82a1a75df0ba9e1b483a58c66c56a8bf2213
Reviewed-on: https://chromium-review.googlesource.com/1170584Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582375}

content/browser/devtools/protocol/system_info_handler.cc

@@ -33,7 +33,8 @@ using GetInfoCallback = SystemInfo::Backend::GetInfoCallback;
 
 // Give the GPU process a few seconds to provide GPU info.
 // Linux Debug builds need more time -- see Issue 796437.
-#if defined(OS_LINUX) && !defined(NDEBUG)
+// Windows builds need more time -- see Issue 873112.
+#if (defined(OS_LINUX) && !defined(NDEBUG)) || defined(OS_WIN)
 const int kGPUInfoWatchdogTimeoutMs = 20000;
 #else
 const int kGPUInfoWatchdogTimeoutMs = 5000;