Add a Print() method to bindings JS for last resort debugging.

BUG=
TEST=


Review URL: http://codereview.chromium.org/7640005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96524 0039d316-1c4b-4281-b951-d872f2087c98

chrome/renderer/extensions/bindings_utils.cc

@@ -4,9 +4,11 @@
 
 #include "chrome/renderer/extensions/bindings_utils.h"
 
+#include "base/logging.h"
 #include "base/lazy_instance.h"
 #include "base/stringprintf.h"
 #include "base/string_split.h"
+#include "base/string_util.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "chrome/renderer/extensions/extension_dispatcher.h"
@@ -84,6 +86,10 @@ v8::Handle<v8::FunctionTemplate>
     return v8::FunctionTemplate::New(GetChromeHidden);
   }
 
+  if (name->Equals(v8::String::New("Print"))) {
+    return v8::FunctionTemplate::New(Print);
+  }
+
   return v8::Handle<v8::FunctionTemplate>();
 }
 
@@ -110,6 +116,18 @@ v8::Handle<v8::Value> ExtensionBase::GetChromeHidden(
   return hidden;
 }
 
+v8::Handle<v8::Value> ExtensionBase::Print(const v8::Arguments& args) {
+  if (args.Length() < 1)
+    return v8::Undefined();
+
+  std::vector<std::string> components;
+  for (int i = 0; i < args.Length(); ++i)
+    components.push_back(*v8::String::Utf8Value(args[i]->ToString()));
+
+  LOG(ERROR) << JoinString(components, ',');
+  return v8::Undefined();
+}
+
 ContextInfo::ContextInfo(v8::Persistent<v8::Context> context,
                          const std::string& extension_id,
                          WebKit::WebFrame* parent_frame,

chrome/renderer/extensions/bindings_utils.h

@@ -67,6 +67,10 @@ class ExtensionBase : public v8::Extension {
   static v8::Handle<v8::Value> GetChromeHidden(const v8::Arguments& args);
 
   ExtensionDispatcher* extension_dispatcher_;
+
+ private:
+  // Helper to print from bindings javascript.
+  static v8::Handle<v8::Value> Print(const v8::Arguments& args);
 };
 
 const char* GetStringResource(int resource_id);

chrome/renderer/resources/event_bindings.js

@@ -8,6 +8,7 @@ var chrome = chrome || {};
   native function AttachEvent(eventName);
   native function DetachEvent(eventName);
   native function GetExternalFileEntry(fileDefinition);
+  native function Print();
 
   var chromeHidden = GetChromeHidden();
 

chrome/renderer/resources/extension_process_bindings.js

@@ -23,6 +23,7 @@ var chrome = chrome || {};
   native function GetUniqueSubEventName(eventName);
   native function GetLocalFileSystem(name, path);
   native function DecodeJPEG(jpeg_image);
+  native function Print();
 
   var chromeHidden = GetChromeHidden();
 
@@ -77,8 +78,6 @@ var chrome = chrome || {};
 
         throw new Error(message);
       } else if (!schemas[i].optional) {
-        console.log(chromeHidden.JSON.stringify(args));
-        console.log(chromeHidden.JSON.stringify(schemas));
         throw new Error("Parameter " + (i + 1) + " is required.");
       }
     }

chrome/renderer/resources/renderer_extension_bindings.js

@@ -17,6 +17,7 @@ var chrome = chrome || {};
   native function PostMessage(portId, msg);
   native function GetChromeHidden();
   native function GetL10nMessage();
+  native function Print();
 
   var chromeHidden = GetChromeHidden();