Add ExtensionFunctionDispatcher::Delegate::GetAssociatedTabContents.

Following work from: http://codereview.chromium.org/1521032/show, based on comments from aa here: http://codereview.chromium.org/1521032/diff/4002/9004#newcode639

BUG=40428
TEST=All tests should pass

Review URL: http://codereview.chromium.org/1627024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@44680 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 0 deletions

diff --git a/chrome/browser/extensions/extension_function_dispatcher.h b/chrome/browser/extensions/extension_function_dispatcher.h
index fc50c17..8f1f6d9 100644
--- a/chrome/browser/extensions/extension_function_dispatcher.h
+++ b/chrome/browser/extensions/extension_function_dispatcher.h
@@ -21,6 +21,7 @@ class ExtensionHost;
 class Profile;
 class RenderViewHost;
 class RenderViewHostDelegate;
+class TabContents;
 class Value;
 
 // A factory function for creating new ExtensionFunction instances.
@@ -48,6 +49,12 @@ class ExtensionFunctionDispatcher {
       return NULL;
     }
 
+    // Asks the delegate for any relevant TabContents associated with this
+    // context. For example, the TabContents in which an infobar or
+    // chrome-extension://<id> URL are being shown. Callers must check for a
+    // NULL return value (as in the case of a background page).
+    virtual TabContents* associated_tab_contents() = 0;
+
    protected:
     virtual ~Delegate() {}
   };