Add new FrameTest.* unit tests and fix discovered CefFrame-related bugs.

- Allow empty |name| argument to CefBrowser::GetFrame. This will return the main frame.
- Modify CefBrowser::GetFrame to search both assigned and unique frame names.
- Calling CefFrame::IsFocused on the main frame should return true when there are no other frames.
- Fix CefBrowser::GetFrameIdentifiers and GetFrameNames to return correct values in the renderer process (issue #1236).
- Delete NavigationTest.FrameNameIdent which is now obsoleted by the new FrameTests.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2062@1843 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/renderer/webkit_glue.cc

@@ -26,6 +26,7 @@ MSVC_PUSH_WARNING_LEVEL(0);
 #include "third_party/WebKit/public/web/WebViewClient.h"
 
 #include "third_party/WebKit/Source/core/dom/Node.h"
+#include "third_party/WebKit/Source/web/WebLocalFrameImpl.h"
 #include "third_party/WebKit/Source/web/WebViewImpl.h"
 MSVC_POP_WARNING();
 #undef LOG
@@ -94,4 +95,30 @@ int64 GetIdentifier(blink::WebFrame* frame) {
   return kInvalidFrameId;
 }
 
+// Based on WebViewImpl::findFrameByName and FrameTree::find.
+blink::WebFrame* FindFrameByUniqueName(const blink::WebString& unique_name,
+                                       blink::WebFrame* relative_to_frame) {
+  WebCore::Frame* start_frame = toWebLocalFrameImpl(relative_to_frame)->frame();
+  if (!start_frame)
+    return NULL;
+
+  const AtomicString& atomic_name = unique_name;
+  WebCore::Frame* found_frame = NULL;
+
+  // Search the subtree starting with |start_frame|.
+  for (WebCore::Frame* frame = start_frame;
+       frame;
+       frame = frame->tree().traverseNext(start_frame)) {
+    if (frame->tree().uniqueName() == atomic_name) {
+      found_frame = frame;
+      break;
+    }
+  }
+
+  if (found_frame && found_frame->isLocalFrame())
+    return blink::WebLocalFrameImpl::fromFrame(toLocalFrame(found_frame));
+
+  return NULL;
+}
+
 }  // webkit_glue