Teach tools/skydb how to take a URL as a parameter.

sky/tools/debugger/prompt/prompt.cc

Index: sky/tools/debugger/prompt/prompt.cc
diff --git a/sky/tools/debugger/prompt/prompt.cc b/sky/tools/debugger/prompt/prompt.cc
index 60d6733802f31c156be09225ce2f4818fcbf6e59..3c4e7fd3609e1e76f404d7281ea3e4e5f79c47da 100644
--- a/sky/tools/debugger/prompt/prompt.cc
+++ b/sky/tools/debugger/prompt/prompt.cc
@@ -43,12 +43,19 @@ class Prompt : public mojo::ApplicationDelegate {
   // Overridden from mojo::ApplicationDelegate:
   virtual void Initialize(mojo::ApplicationImpl* app) override {
     app->ConnectToService("mojo:sky_viewer", &tracing_);
-    ScheduleWaitForInput();
+    if (!app->args().empty()) {
+      url_ = app->args()[1];

[abarth-chromium, 2014/10/23 20:34:41]

Should we check the number of arguments?

+      std::cout << url_ << std::endl;
+    }
   }
 
   virtual bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override {
     connection->ConnectToService(&debugger_);
+    if (!url_.empty()) {
+      Reload();
+    }
+    ScheduleWaitForInput();
     return true;
   }