Implement script API:executeScript

chrome/browser/extensions/extension_tabs_module.cc

Index: chrome/browser/extensions/extension_tabs_module.cc
===================================================================
--- chrome/browser/extensions/extension_tabs_module.cc	(revision 26435)
+++ chrome/browser/extensions/extension_tabs_module.cc	(working copy)
@@ -27,7 +27,6 @@
 #include "skia/ext/platform_canvas.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
-
 namespace keys = extension_tabs_module_constants;
 
 // Forward declare static helper functions defined below.
@@ -157,6 +156,22 @@
   return result;
 }
 
+bool ExtensionTabUtil::GetDefaultTab(Browser* browser, TabContents** contents,
+                                     int* tab_id) {
+  DCHECK(browser);
+  DCHECK(contents);
+  DCHECK(tab_id);
+
+  *contents = browser->tabstrip_model()->GetSelectedTabContents();
+  if (*contents) {
+    if (tab_id)
+      *tab_id = ExtensionTabUtil::GetTabId(*contents);
+    return true;
+  }
+
+  return false;
+}
+
 bool ExtensionTabUtil::GetTabById(int tab_id, Profile* profile,
                                   Browser** browser,
                                   TabStripModel** tab_strip,
@@ -676,7 +691,7 @@
 
   if (new_index != tab_index)
     source_tab_strip->MoveTabContentsAt(tab_index, new_index, false);
-  
+
   if (has_callback())
     result_.reset(ExtensionTabUtil::CreateTabValue(contents, source_tab_strip,
         new_index));