Introduce a new 'all_frames' property to content scripts and

chrome/common/extensions/extension_constants.cc

Index: chrome/common/extensions/extension_constants.cc
diff --git a/chrome/common/extensions/extension_constants.cc b/chrome/common/extensions/extension_constants.cc
index 733b4f8634f83e892a343a3f4dd41f0dafb89871..58ea6aa2cbf4e4bbf107437e5d0e1b312bb103de 100644
--- a/chrome/common/extensions/extension_constants.cc
+++ b/chrome/common/extensions/extension_constants.cc
@@ -6,6 +6,7 @@
 
 namespace extension_manifest_keys {
 
+const wchar_t* kAllFrames = L"all_frames";
 const wchar_t* kBackground = L"background_page";
 const wchar_t* kBrowserAction = L"browser_action";
 const wchar_t* kChromeURLOverrides = L"chrome_url_overrides";
@@ -65,6 +66,8 @@ const char* kPageActionTypePermanent = "permanent";
 // printf because we want to unit test them and scanf is hard to make
 // cross-platform.
 namespace extension_manifest_errors {
+const char* kInvalidAllFrames =
+    "Invalid value for 'content_scripts[*].all_frames'.";
 const char* kInvalidBrowserAction =
     "Invalid value for 'browser_action'.";
 const char* kInvalidChromeURLOverrides =