Fix misspelling in flag description (s/redruce/reduce)

Bug: None
Change-Id: I6bde5f644956718be3a37701d178e6b99a8a1292
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2144256Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757900}

chrome/browser/flag_descriptions.cc

@@ -1837,7 +1837,7 @@ const char kSplitPartiallyOccludedQuadsName[] =
     "Split partially occluded quads";
 const char kSplitPartiallyOccludedQuadsDescription[] =
     "Split partially occluded quads before drawing, discarding the occluded "
-    "regions, in order to redruce compositing overdraw.";
+    "regions, in order to reduce compositing overdraw.";
 
 const char kStrictOriginIsolationName[] = "Strict-Origin-Isolation";
 const char kStrictOriginIsolationDescription[] =