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

Turns out our shut-down code in debugger.cc is never
called.  Need to talk to Ben to figure out how
to listen for the CloseWindow.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/658113004

tools/debugger/debugger.cc

@@ -74,11 +74,13 @@ class SkyDebugger : public mojo::ApplicationDelegate,
 
   virtual void OnViewManagerDisconnected(
       mojo::ViewManager* view_manager) override {
+    CHECK(false); // FIXME: This is dead code, why?
     view_manager_ = nullptr;
     root_ = nullptr;
   }
 
   virtual void OnViewDestroyed(mojo::View* view) override {
+    CHECK(false); // FIXME: This is dead code, why?
     view->RemoveObserver(this);
   }
 

tools/debugger/prompt/prompt.cc

@@ -43,12 +43,16 @@ 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().size() > 1)
+      url_ = app->args()[1];
   }
 
   virtual bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override {
     connection->ConnectToService(&debugger_);
+    if (!url_.empty())
+      Reload();
+    ScheduleWaitForInput();
     return true;
   }
 

tools/skydb

@@ -5,16 +5,27 @@
 
 import os
 import subprocess
+import sys
 
-build_directory = 'out'
-config_directory = 'Debug'
 
-mojo_shell = os.path.abspath(os.path.join(__file__, os.pardir, os.pardir,
-    os.pardir, build_directory, config_directory, 'mojo_shell'))
+BUILD_DIRECTORY = 'out'
+CONFIG_DIRECTORY = 'Debug'
+MOJO_SHELL_PATH = os.path.abspath(os.path.join(__file__, os.pardir, os.pardir,
+    os.pardir, BUILD_DIRECTORY, CONFIG_DIRECTORY, 'mojo_shell'))
 
-subprocess.call([
-    mojo_shell,
-    '--content-handlers=text/html,mojo://sky_viewer/',
-    '--url-mappings=mojo:window_manager=mojo:sky_debugger',
-    'mojo:window_manager',
-])
+def main(args):
+    shell_command = [
+        MOJO_SHELL_PATH,
+        '--v=1',
+        '--content-handlers=text/html,mojo://sky_viewer/',
+        '--url-mappings=mojo:window_manager=mojo:sky_debugger',
+        'mojo:window_manager',
+    ]
+    if args:
+        prompt_args = '--args-for=mojo://sky_debugger_prompt/ %s' % args[0]
+        shell_command.append(prompt_args)
+    subprocess.check_call(shell_command)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])