Change OOMs to raise custom exception rather than breakpoint on Windows.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2f419abd1c281a6440243692b8bf1172c357a28d..8b6f632480a388522faa7b28d1ceab426765ae1d 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -397,6 +397,13 @@ bool IsBrowserInitiated(NavigationParams* pending) {
          !pending->common_params.url.SchemeIs(url::kJavaScriptScheme);
 }
 
+NOINLINE void ExhaustMemory() {
+  volatile void* ptr = nullptr;
+  do {
+    ptr = malloc(0x10000000);
+  } while (ptr);
+}
+
 NOINLINE void CrashIntentionally() {
   // NOTE(shess): Crash directly rather than using NOTREACHED() so
   // that the signature is easier to triage in crash reports.
@@ -506,6 +513,11 @@ void MaybeHandleDebugURL(const GURL& url) {
     LOG(ERROR) << "Intentionally sleeping renderer for 20 seconds"
                << " because user navigated to " << url.spec();
     base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(20));
+  } else if (url == GURL(kChromeUIMemoryExhaustURL)) {
+    LOG(ERROR)
+        << "Intentionally exhausting renderer memory because user navigated to "
+        << url.spec();
+    ExhaustMemory();
   }
 
 #if defined(ADDRESS_SANITIZER) || defined(SYZYASAN)