Create a minimal webkit_common static library for use in browser process

public/common/WebCString.h

Index: public/common/WebCString.h
diff --git a/public/platform/WebCString.h b/public/common/WebCString.h
similarity index 82%
copy from public/platform/WebCString.h
copy to public/common/WebCString.h
index 7eb6fc1463a51890fd7f18561c77b01b1b067944..2e3fede28aeb6377b2eac4320e69aa488a927237 100644
--- a/public/platform/WebCString.h
+++ b/public/common/WebCString.h
@@ -31,12 +31,10 @@
 #ifndef WebCString_h
 #define WebCString_h
 
-#include "WebCommon.h"
+#include "WebCommonExport.h"
 #include "WebPrivatePtr.h"
 
-#if WEBKIT_IMPLEMENTATION
-#include <wtf/Forward.h>
-#else
+#if !defined(INSIDE_WEBKIT)
 #include <string>
 #endif
 
@@ -49,7 +47,7 @@ namespace WebKit {
 
 class WebString;
 
-// A single-byte string container with unspecified encoding.  It is
+// A single-byte string container with unspecified encoding. It is
 // inexpensive to copy a WebCString object.
 //
 // WARNING: It is not safe to pass a WebCString across threads!!!
@@ -76,24 +74,24 @@ public:
     // Returns 0 if both strings are equals, a value greater than zero if the
     // first character that does not match has a greater value in this string
     // than in |other|, or a value less than zero to indicate the opposite.
-    WEBKIT_EXPORT int compare(const WebCString& other) const;
+    BLINK_COMMON_EXPORT int compare(const WebCString& other) const;
 
-    WEBKIT_EXPORT void reset();
-    WEBKIT_EXPORT void assign(const WebCString&);
-    WEBKIT_EXPORT void assign(const char* data, size_t len);
+    BLINK_COMMON_EXPORT void reset();
+    BLINK_COMMON_EXPORT void assign(const WebCString&);
+    BLINK_COMMON_EXPORT void assign(const char* data, size_t len);
 
-    WEBKIT_EXPORT size_t length() const;
-    WEBKIT_EXPORT const char* data() const;
+    BLINK_COMMON_EXPORT size_t length() const;
+    BLINK_COMMON_EXPORT const char* data() const;
 
     bool isEmpty() const { return !length(); }
     bool isNull() const { return m_private.isNull(); }
 
-    WEBKIT_EXPORT WebString utf16() const;
+    BLINK_COMMON_EXPORT WebString utf16() const;
 
-#if WEBKIT_IMPLEMENTATION
-    WebCString(const WTF::CString&);
-    WebCString& operator=(const WTF::CString&);
-    operator WTF::CString() const;
+#if defined(INSIDE_WEBKIT)
+    BLINK_COMMON_EXPORT WebCString(const WTF::CString&);
+    BLINK_COMMON_EXPORT WebCString& operator=(const WTF::CString&);
+    BLINK_COMMON_EXPORT operator WTF::CString() const;
 #else
     WebCString(const std::string& s)
     {