Move kFileScheme constant into content namespace.

extensions/common/url_pattern.cc

Index: extensions/common/url_pattern.cc
diff --git a/extensions/common/url_pattern.cc b/extensions/common/url_pattern.cc
index 2591cb7a101143933cd42036a5839cd45057dd3a..ab33bd876b89daf9c862838b4640c86d878723d2 100644
--- a/extensions/common/url_pattern.cc
+++ b/extensions/common/url_pattern.cc
@@ -22,7 +22,7 @@ namespace {
 const char* kValidSchemes[] = {
   content::kHttpScheme,
   content::kHttpsScheme,
-  chrome::kFileScheme,
+  content::kFileScheme,
   content::kFtpScheme,
   chrome::kChromeUIScheme,
   extensions::kExtensionScheme,
@@ -192,7 +192,7 @@ URLPattern::ParseResult URLPattern::Parse(const std::string& pattern) {
 
   if (!standard_scheme) {
     path_start_pos = host_start_pos;
-  } else if (scheme_ == chrome::kFileScheme) {
+  } else if (scheme_ == content::kFileScheme) {
     size_t host_end_pos = pattern.find(kPathSeparator, host_start_pos);
     if (host_end_pos == std::string::npos) {
       // Allow hostname omission.
@@ -426,7 +426,7 @@ const std::string& URLPattern::GetAsString() const {
   std::string spec = scheme_ +
       (standard_scheme ? content::kStandardSchemeSeparator : ":");
 
-  if (scheme_ != chrome::kFileScheme && standard_scheme) {
+  if (scheme_ != content::kFileScheme && standard_scheme) {
     if (match_subdomains_) {
       spec += "*";
       if (!host_.empty())
@@ -493,7 +493,7 @@ bool URLPattern::MatchesAllSchemes(
 
 bool URLPattern::MatchesSecurityOriginHelper(const GURL& test) const {
   // Ignore hostname if scheme is file://.
-  if (scheme_ != chrome::kFileScheme && !MatchesHost(test))
+  if (scheme_ != content::kFileScheme && !MatchesHost(test))
     return false;
 
   if (!MatchesPortPattern(base::IntToString(test.EffectiveIntPort())))