Even more test cleanup. Some fixes to non-test code.

chrome/test/webdriver/commands/speed_command.cc

Index: chrome/test/webdriver/commands/speed_command.cc
diff --git a/chrome/test/webdriver/commands/speed_command.cc b/chrome/test/webdriver/commands/speed_command.cc
index e09602d3c8068dceed244a15c8922f2de0144ce2..95b4abdc3f8d447fd84b0173e8446a2237918582 100644
--- a/chrome/test/webdriver/commands/speed_command.cc
+++ b/chrome/test/webdriver/commands/speed_command.cc
@@ -9,6 +9,14 @@
 
 namespace webdriver {
 
+SpeedCommand::SpeedCommand(const std::vector<std::string>& path_segments,
+                           const DictionaryValue* const parameters)
+    : WebDriverCommand(path_segments, parameters),
+      speed_(Session::kMedium) {
+}
+
+SpeedCommand::~SpeedCommand() {}
+
 bool SpeedCommand::Init(Response* const response) {
   std::string speed;
 
@@ -44,6 +52,14 @@ bool SpeedCommand::Init(Response* const response) {
   return true;
 }
 
+bool SpeedCommand::DoesGet() {
+  return true;
+}
+
+bool SpeedCommand::DoesPost() {
+  return true;
+}
+
 void SpeedCommand::ExecuteGet(Response* const response) {
   switch (session_->speed()) {
     case Session::kSlow:
@@ -82,5 +98,9 @@ void SpeedCommand::ExecutePost(Response* const response) {
   response->set_status(kSuccess);
 }
 
+bool SpeedCommand::RequiresValidTab() {
+  return true;
+}
+
 }  // namespace webdriver