Try to cut down on some unnecessary dependencies.  Remove any unused includes of gurl.h in header files, and forward declare GURL where possible.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@33 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/metrics_log.cc b/chrome/browser/metrics_log.cc
index 5509c1c..e488567 100644
--- a/chrome/browser/metrics_log.cc
+++ b/chrome/browser/metrics_log.cc
@@ -40,6 +40,7 @@
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
+#include "googleurl/src/gurl.h"
 #include "net/base/base64.h"
 
 #define OPEN_ELEMENT_FOR_SCOPE(name) ScopedElement scoped_element(this, name)