Make basic bits of chrome/test/automation build on Linux.

chrome/test/automation/tab_proxy.h

Index: chrome/test/automation/tab_proxy.h
diff --git a/chrome/test/automation/tab_proxy.h b/chrome/test/automation/tab_proxy.h
index 1e393f5461eb0645a613c72b17425d56733355af..1984224d4428e2c43dfbd485d1a81fa36e88a31f 100644
--- a/chrome/test/automation/tab_proxy.h
+++ b/chrome/test/automation/tab_proxy.h
@@ -5,7 +5,12 @@
 #ifndef CHROME_TEST_AUTOMATION_TAB_PROXY_H_
 #define CHROME_TEST_AUTOMATION_TAB_PROXY_H_
 
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
 #include <wtypes.h>
+#endif
+
 #include <string>
 #include <vector>
 
@@ -127,9 +132,13 @@ class TabProxy : public AutomationResourceProxy {
   // the last tab.
   bool Close(bool wait_until_closed);
 
+#if defined(OS_WIN)
+  // TODO(port): Use portable replacement for HWND.
+
   // Gets the HWND that corresponds to the content area of this tab.
   // Returns true if the call was successful.
   bool GetHWND(HWND* hwnd) const;
+#endif  // defined(OS_WIN)
 
   // Gets the process ID that corresponds to the content area of this tab.
   // Returns true if the call was successful.  If the specified tab has no
@@ -197,6 +206,9 @@ class TabProxy : public AutomationResourceProxy {
   // page has been hidden. Return false if a failure happens.
   bool HideInterstitialPage();
 
+#if defined(OS_WIN)
+  // TODO(port): Use something portable.
+
   // This sets the keyboard accelerators to be used by an externally
   // hosted tab. This call is not valid on a regular tab hosted within
   // Chrome.
@@ -206,6 +218,7 @@ class TabProxy : public AutomationResourceProxy {
   // accelerator keys that it did not process. This gives the tab a chance
   // to handle the keys
   bool ProcessUnhandledAccelerator(const MSG& msg);
+#endif  // defined(OS_WIN)
 
   // Ask the tab to set focus to either the first or last element on the page.
   bool SetInitialFocus(bool reverse);