Decouple input_method from BrowserThread (and content/).

chrome/browser/chromeos/input_method/mock_input_method_delegate.cc

Index: chrome/browser/chromeos/input_method/mock_input_method_delegate.cc
diff --git a/chrome/browser/chromeos/input_method/mock_input_method_delegate.cc b/chrome/browser/chromeos/input_method/mock_input_method_delegate.cc
index 7114fbe1a5f2578158ebdabde5b5e59d024e7721..e9969e11af1348803e9619ff78bad589ffc00fef 100644
--- a/chrome/browser/chromeos/input_method/mock_input_method_delegate.cc
+++ b/chrome/browser/chromeos/input_method/mock_input_method_delegate.cc
@@ -4,6 +4,9 @@
 
 #include "chrome/browser/chromeos/input_method/mock_input_method_delegate.h"
 
+#include "base/logging.h"
+#include "base/sequenced_task_runner.h"
+
 namespace chromeos {
 namespace input_method {
 
@@ -22,5 +25,17 @@ std::string MockInputMethodDelegate::GetActiveLocale() const {
   return active_locale_;
 }
 
+scoped_refptr<base::SequencedTaskRunner>
+MockInputMethodDelegate::GetDefaultTaskRunner() const {
+  NOTREACHED();
+  return NULL;
+}
+
+scoped_refptr<base::SequencedTaskRunner>
+MockInputMethodDelegate::GetWorkerTaskRunner() const {
+  NOTREACHED();
+  return NULL;
+}
+
 }  // namespace input_method
 }  // namespace chromeos