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

content/shell/app/shell_breakpad_client.cc

Index: content/shell/app/shell_breakpad_client.cc
diff --git a/content/shell/app/shell_breakpad_client.cc b/content/shell/app/shell_breakpad_client.cc
index 0e7cb95750f697f92d1cf22c6ff1ed4b527333fa..423b89004b6096523d902c8c0d01e94876d166b4 100644
--- a/content/shell/app/shell_breakpad_client.cc
+++ b/content/shell/app/shell_breakpad_client.cc
@@ -27,8 +27,8 @@ void ShellBreakpadClient::GetProductNameAndVersion(
     base::string16* version,
     base::string16* special_build,
     base::string16* channel_name) {
-  *product_name = ASCIIToUTF16("content_shell");
-  *version = ASCIIToUTF16(CONTENT_SHELL_VERSION);
+  *product_name = base::ASCIIToUTF16("content_shell");
+  *version = base::ASCIIToUTF16(CONTENT_SHELL_VERSION);
   *special_build = base::string16();
   *channel_name = base::string16();
 }