Move EndsWith to base namespace.

components/plugins/renderer/plugin_placeholder.cc

Index: components/plugins/renderer/plugin_placeholder.cc
diff --git a/components/plugins/renderer/plugin_placeholder.cc b/components/plugins/renderer/plugin_placeholder.cc
index 7ef233d42d0279a0471df1cfab1cb6e85096989e..b44cbe989d48245185484e0bacc3a59d3c43a197 100644
--- a/components/plugins/renderer/plugin_placeholder.cc
+++ b/components/plugins/renderer/plugin_placeholder.cc
@@ -78,14 +78,14 @@ void PluginPlaceholderBase::HidePlugin() {
   if (element.hasAttribute("width") && element.hasAttribute("height")) {
     std::string width_str("width:[\\s]*");
     width_str += element.getAttribute("width").utf8().data();
-    if (EndsWith(width_str, "px", false)) {
+    if (base::EndsWith(width_str, "px", false)) {
       width_str = width_str.substr(0, width_str.length() - 2);
     }
     base::TrimWhitespace(width_str, base::TRIM_TRAILING, &width_str);
     width_str += "[\\s]*px";
     std::string height_str("height:[\\s]*");
     height_str += element.getAttribute("height").utf8().data();
-    if (EndsWith(height_str, "px", false)) {
+    if (base::EndsWith(height_str, "px", false)) {
       height_str = height_str.substr(0, height_str.length() - 2);
     }
     base::TrimWhitespace(height_str, base::TRIM_TRAILING, &height_str);