Revert 96556 - Let pyauto create an attached webdriver instance to manipulate web pages.

chrome/test/automation/proxy_launcher.cc

Index: chrome/test/automation/proxy_launcher.cc
===================================================================
--- chrome/test/automation/proxy_launcher.cc	(revision 96579)
+++ chrome/test/automation/proxy_launcher.cc	(working copy)
@@ -519,22 +519,17 @@
   return proxy;
 }
 
-bool NamedProxyLauncher::InitializeConnection(const LaunchState& state,
+void NamedProxyLauncher::InitializeConnection(const LaunchState& state,
                                               bool wait_for_initial_loads) {
   if (launch_browser_) {
 #if defined(OS_POSIX)
     // Because we are waiting on the existence of the testing file below,
     // make sure there isn't one already there before browser launch.
-    if (!file_util::Delete(FilePath(channel_id_), false)) {
-      LOG(ERROR) << "Failed to delete " << channel_id_;
-      return false;
-    }
+    EXPECT_TRUE(file_util::Delete(FilePath(channel_id_), false));
 #endif
 
-    if (!LaunchBrowser(state)) {
-      LOG(ERROR) << "Failed to LaunchBrowser";
-      return false;
-    }
+    // Set up IPC testing interface as a client.
+    ASSERT_TRUE(LaunchBrowser(state));
   }
 
   // Wait for browser to be ready for connections.
@@ -547,16 +542,9 @@
       break;
     base::PlatformThread::Sleep(automation::kSleepTime);
   }
-  if (!channel_initialized) {
-    LOG(ERROR) << "Failed to wait for testing channel presence.";
-    return false;
-  }
+  EXPECT_TRUE(channel_initialized);
 
-  if (!ConnectToRunningBrowser(wait_for_initial_loads)) {
-    LOG(ERROR) << "Failed to ConnectToRunningBrowser";
-    return false;
-  }
-  return true;
+  ASSERT_TRUE(ConnectToRunningBrowser(wait_for_initial_loads));
 }
 
 void NamedProxyLauncher::TerminateConnection() {
@@ -587,9 +575,9 @@
   return proxy;
 }
 
-bool AnonymousProxyLauncher::InitializeConnection(const LaunchState& state,
+void AnonymousProxyLauncher::InitializeConnection(const LaunchState& state,
                                                   bool wait_for_initial_loads) {
-  return LaunchBrowserAndServer(state, wait_for_initial_loads);
+  ASSERT_TRUE(LaunchBrowserAndServer(state, wait_for_initial_loads));
 }
 
 void AnonymousProxyLauncher::TerminateConnection() {