Reduce string copies in GURL creation

third_party/WebKit/public/platform/WebString.h

Index: third_party/WebKit/public/platform/WebString.h
diff --git a/third_party/WebKit/public/platform/WebString.h b/third_party/WebKit/public/platform/WebString.h
index 8e4bbcc473ca4f4d985f70d943cf953a5734dfad..4948d0355ee585238f33d466013dd253c6f2435a 100644
--- a/third_party/WebKit/public/platform/WebString.h
+++ b/third_party/WebKit/public/platform/WebString.h
@@ -38,9 +38,9 @@
 #if INSIDE_BLINK
 #include "wtf/Forward.h"
 #else
-#include <base/strings/latin1_string_conversions.h>
-#include <base/strings/nullable_string16.h>
-#include <base/strings/string16.h>
+#include "base/strings/latin1_string_conversions.h"
+#include "base/strings/nullable_string16.h"
+#include "base/strings/string16.h"
 #endif
 
 namespace WTF {
@@ -85,6 +85,8 @@ public:
     bool isEmpty() const { return !length(); }
     bool isNull() const { return m_private.isNull(); }
 
+    // See also WebStringUTF8Adaptor which will allow getting a UTF-8 buffer
+    // without copying when the string is ASCII.
     BLINK_COMMON_EXPORT std::string utf8() const;
 
     BLINK_COMMON_EXPORT static WebString fromUTF8(const char* data, size_t length);
@@ -171,6 +173,8 @@ private:
     BLINK_COMMON_EXPORT void assign(WTF::StringImpl*);
 
     WebPrivatePtr<WTF::StringImpl> m_private;
+
+    friend class WebStringUTF8Adaptor;
 };
 
 inline bool operator==(const WebString& a, const char* b)