Adds a bit of Greasemonkey support hidden behind the --enable-greasemonkey flag. Implementation follows the pattern of the visited links system.

Things still to be done:
- stop using a hardcoded script directory
- watch script directory and update shared memory when necessary
- move file io to background thread
- support for @include patterns -- now, all scripts are applied to all pages
Review URL: http://codereview.chromium.org/7254

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@3496 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 15 insertions, 0 deletions

diff --git a/webkit/glue/webframe.h b/webkit/glue/webframe.h
index 2169549..c8d73af 100644
--- a/webkit/glue/webframe.h
+++ b/webkit/glue/webframe.h
@@ -91,6 +91,12 @@ class WebFrame : public base::RefCounted<WebFrame> {
                                           bool replace,
                                           const GURL& fake_url) = 0;
 
+  // Executes a string of JavaScript in the web frame. The script_url param is
+  // the URL where the script in question can be found, if any. The renderer may
+  // request this URL to show the developer the source of the error.
+  virtual void ExecuteJavaScript(const std::string& js_code,
+                                 const std::string& script_url) = 0;
+
   // Returns a string representing the state of the previous page load for
   // later use when loading as well as the uri and title of the page.  The
   // previous page is the page that was loaded before DidCommitLoadForFrame was
diff --git a/webkit/glue/webframe_impl.cc b/webkit/glue/webframe_impl.cc
index 4710e21..ca8997e 100644
--- a/webkit/glue/webframe_impl.cc
+++ b/webkit/glue/webframe_impl.cc
@@ -1595,6 +1595,13 @@ void WebFrameImpl::LoadAlternateHTMLErrorPage(const WebRequest* request,
                                       error_page_url));
 }
 
+void WebFrameImpl::ExecuteJavaScript(const std::string& js_code,
+                                     const std::string& script_url) {
+  frame_->loader()->executeScript(webkit_glue::StdStringToString(script_url),
+                                  1, // base line number (for errors)
+                                  webkit_glue::StdStringToString(js_code));
+}
+
 std::wstring WebFrameImpl::GetName() {
   return webkit_glue::StringToStdWString(frame_->tree()->name());
 }
diff --git a/webkit/glue/webframe_impl.h b/webkit/glue/webframe_impl.h
index fd887d5..9a8afdb 100644
--- a/webkit/glue/webframe_impl.h
+++ b/webkit/glue/webframe_impl.h
@@ -94,6 +94,8 @@ class WebFrameImpl : public WebFrame {
                                           const GURL& error_page_url,
                                           bool replace,
                                           const GURL& fake_url);
+  virtual void ExecuteJavaScript(const std::string& js_code,
+                                 const std::string& script_url);
   virtual bool GetPreviousState(GURL* url, std::wstring* title,
                                 std::string* history_state) const;
   virtual bool GetCurrentState(GURL* url, std::wstring* title,