Fix variable name style

Rename canUsePolyfill -> can_use_polyfill

Bug: 925517
Change-Id: I0a5575f1193f4379c4cc8cd5fcc4ba1214145d6b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1627854
Commit-Queue: Dan Beam <dbeam@chromium.org>
Reviewed-by: Dan Beam <dbeam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662819}

chrome/renderer/chrome_content_renderer_client.cc

@@ -1607,10 +1607,10 @@ bool ChromeContentRendererClient::RequiresHtmlImports(const GURL& url) {
   // Imports Polyfill so that they will not require native imports. Return true
   // for only pages that have not been updated yet. See
   // https://crbug.com/937747.
-  bool canUsePolyfill = url.host() == chrome::kChromeUIExtensionsHost ||
+  bool can_use_polyfill = url.host() == chrome::kChromeUIExtensionsHost ||
                           url.host() == chrome::kChromeUIDownloadsHost;
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
-  canUsePolyfill |= url.host() == chrome::kChromeUIPrintHost;
+  can_use_polyfill |= url.host() == chrome::kChromeUIPrintHost;
 #endif
-  return url.SchemeIs(content::kChromeUIScheme) && !canUsePolyfill;
+  return url.SchemeIs(content::kChromeUIScheme) && !can_use_polyfill;
 }