prune down content_dll change to just the CONTENT_EXPORTS

content/common/content_constants.h

Index: content/common/content_constants.h
diff --git a/content/common/content_constants.h b/content/common/content_constants.h
index ad900d0f1cb58fe400649fdddbae153d4acc8868..dd3a9d4f3729fed87d19f6aba9182fde63dd195f 100644
--- a/content/common/content_constants.h
+++ b/content/common/content_constants.h
@@ -10,6 +10,8 @@
 
 #include <stddef.h>         // For size_t
 
+#include "content/common/content_export.h"
+
 namespace content {
 
 extern const unsigned int kMaxRendererProcessCount;
@@ -28,12 +30,12 @@ extern const size_t kMaxTitleChars;
 // a data: URI may be legitimately massive, but the full URI would kill all
 // known operating systems if you dropped it into a UI control.
 extern const size_t kMaxURLChars;
-extern const size_t kMaxURLDisplayChars;
+CONTENT_EXPORT extern const size_t kMaxURLDisplayChars;
 
 // The render view and render process id associated with the default plugin
 // instance.
-extern const char kDefaultPluginRenderViewId[];
-extern const char kDefaultPluginRenderProcessId[];
+CONTENT_EXPORT extern const char kDefaultPluginRenderViewId[];
+CONTENT_EXPORT extern const char kDefaultPluginRenderProcessId[];
 
 extern const char kStatsFilename[];
 extern const int kStatsMaxThreads;