Update uses of UTF conversions in chrome/common to use the base:: namespace.

chrome/common/extensions/manifest_handlers/app_launch_info.cc

Index: chrome/common/extensions/manifest_handlers/app_launch_info.cc
diff --git a/chrome/common/extensions/manifest_handlers/app_launch_info.cc b/chrome/common/extensions/manifest_handlers/app_launch_info.cc
index 1a09122c5d26a660840daa423453b501b0083ef6..a3b3ac592ec71d3c5f689684d6e9aa0838d37d78 100644
--- a/chrome/common/extensions/manifest_handlers/app_launch_info.cc
+++ b/chrome/common/extensions/manifest_handlers/app_launch_info.cc
@@ -118,12 +118,12 @@ bool AppLaunchInfo::LoadLaunchURL(Extension* extension, base::string16* error) {
   // web URL.
   if (extension->manifest()->Get(keys::kLaunchLocalPath, &temp)) {
     if (extension->manifest()->Get(keys::kLaunchWebURL, NULL)) {
-      *error = ASCIIToUTF16(errors::kLaunchPathAndURLAreExclusive);
+      *error = base::ASCIIToUTF16(errors::kLaunchPathAndURLAreExclusive);
       return false;
     }
 
     if (extension->manifest()->Get(keys::kWebURLs, NULL)) {
-      *error = ASCIIToUTF16(errors::kLaunchPathAndExtentAreExclusive);
+      *error = base::ASCIIToUTF16(errors::kLaunchPathAndExtentAreExclusive);
       return false;
     }
 
@@ -166,7 +166,7 @@ bool AppLaunchInfo::LoadLaunchURL(Extension* extension, base::string16* error) {
 
     launch_web_url_ = url;
   } else if (extension->is_legacy_packaged_app()) {
-    *error = ASCIIToUTF16(errors::kLaunchURLRequired);
+    *error = base::ASCIIToUTF16(errors::kLaunchURLRequired);
     return false;
   }
 
@@ -233,7 +233,7 @@ bool AppLaunchInfo::LoadLaunchContainer(Extension* extension,
 
   std::string launch_container_string;
   if (!tmp_launcher_container->GetAsString(&launch_container_string)) {
-    *error = ASCIIToUTF16(errors::kInvalidLaunchContainer);
+    *error = base::ASCIIToUTF16(errors::kInvalidLaunchContainer);
     return false;
   }
 
@@ -242,7 +242,7 @@ bool AppLaunchInfo::LoadLaunchContainer(Extension* extension,
   } else if (launch_container_string == values::kLaunchContainerTab) {
     launch_container_ = LAUNCH_CONTAINER_TAB;
   } else {
-    *error = ASCIIToUTF16(errors::kInvalidLaunchContainer);
+    *error = base::ASCIIToUTF16(errors::kInvalidLaunchContainer);
     return false;
   }